An adult weighs 172 lbs. Convert this weight to kilograms.
The Correct Answer and Explanation is :
To convert pounds to kilograms, you can use the conversion factor where 1 pound is approximately equal to 0.453592 kilograms. The formula to convert pounds (lbs) to kilograms (kg) is:
[
\text{weight in kg} = \text{weight in lbs} \times 0.453592
]
For an adult weighing 172 lbs, the calculation would be:
[
172 \, \text{lbs} \times 0.453592 \, \text{kg/lb} = 77.110 kg
]
Thus, an adult who weighs 172 pounds weighs approximately 77.11 kilograms.
Explanation of the Conversion Process
Weight is a measure of mass, and in the context of daily life, it’s often expressed in either pounds or kilograms, depending on the region. In the United States, pounds are commonly used, while many other countries adopt the metric system, which uses kilograms.
The conversion factor of 0.453592 comes from the definition of a pound relative to the kilogram. This specific value allows for an accurate conversion between the two units. When you multiply the weight in pounds by this factor, you obtain the equivalent weight in kilograms.
Understanding this conversion is essential for various applications, such as healthcare, nutrition, and sports science, where weight plays a significant role in assessments. For example, health professionals often use metric measurements for body mass index (BMI) calculations, which require weight in kilograms and height in meters.
Moreover, knowing how to convert between these units is valuable for international travel, as most countries use the metric system. Therefore, being able to convert your weight accurately can help you understand and engage with different health-related contexts globally.
In summary, the conversion from pounds to kilograms involves a straightforward mathematical calculation using a consistent conversion factor, allowing for accurate weight representation across different measurement systems.