Which of the following is the correct method for converting pounds to kilograms and inches to meters for dosage calculations?

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Multiple Choice

Which of the following is the correct method for converting pounds to kilograms and inches to meters for dosage calculations?

Explanation:
Converting units correctly is essential for dosage calculations because we need to work in consistent metric measurements. The standard relationships are that 1 kilogram equals about 2.2046 pounds, and 1 inch equals 0.0254 meters. So pounds to kilograms is best done by dividing by 2.205 (a rounded value of 2.2046) or equivalently multiplying by 0.4536. Inches to meters is done by multiplying by 0.0254. This combination—divide pounds by 2.205 and multiply inches by 0.0254—matches common rounding used in practice. For example, 180 lb becomes 180 / 2.205 ≈ 81.6 kg, and 50 inches becomes 50 × 0.0254 = 1.27 m.

Converting units correctly is essential for dosage calculations because we need to work in consistent metric measurements. The standard relationships are that 1 kilogram equals about 2.2046 pounds, and 1 inch equals 0.0254 meters.

So pounds to kilograms is best done by dividing by 2.205 (a rounded value of 2.2046) or equivalently multiplying by 0.4536. Inches to meters is done by multiplying by 0.0254. This combination—divide pounds by 2.205 and multiply inches by 0.0254—matches common rounding used in practice.

For example, 180 lb becomes 180 / 2.205 ≈ 81.6 kg, and 50 inches becomes 50 × 0.0254 = 1.27 m.

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