Glencoe Math: Course 2, Volume 1
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Glencoe Math: Course 2, Volume 1 View details
7. Convert Between Systems
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Exercise 3 Page 323

Use the fact that 1 pound equals about 0.4536 kilogram.

128.17

Practice makes perfect

We want to express 58.14 kilograms in pounds. 58.14 kg≈ lb We can do this by using the fact that 1 pound equals about 0.4536 kilogram. Let's write this relationship as a unit ratio. 0.4536 kg/1lb To perform the conversion, we need to multiply 58.14 kilograms by the unit ratio or its reciprocal. Remember, we want to get the weight in pounds, and every unit we do not want has to be divided out.

58.14 kg≈ 58.14 kg * 1 lb/0.4536kg
58.14 kg≈ 58.14 kg/1 * 1 lb/0.4536kg
58.14 kg≈ 58.14 kg* 1 lb/1* 0.4536kg
58.14 kg≈ 58.14 kg* 1 lb/1* 0.4536kg
58.14 kg≈ 58.14 * 1 lb/1* 0.4536
58.14 kg≈ 58.14 lb/0.4536
58.14 kg≈ 128.174603... lb
58.14 kg≈ 128.17 lb

We found that 58.14 kilograms is equal to about 128.17 pounds. We can now complete the given statement. 58.14 kg≈ 128.17 lb

Extra

Common Conversion Factors
The following tool can be used to help you explore some of the most commonly used conversion factors. Conversions can be made both within or between the Metric System and the Imperial System — which is also known as the U.S. Customary System.

Conversion factors between different units of measurement

Around the world, people use conversion factors on a regular basis. You can read more about some practical applications of conversion factors in our original content.

Dimensional Analysis and Using Units