Question 1137467
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For me, the easiest way to solve these proportion problems is to look at each factor and see how it changes the end measurement.<br>
In this problem, BMI is directly proportional to body weight.  The reference weight is 177; the new weight is 170.  So the BMI will get multiplied by 170/177.<br>
BMI is also inversely proportional to the square of the height in inches.  The reference height is 72 inches (6 feet); the new height is 64 inches.  So the BMI will get divided by (64/72)^2 = (8/9)^2 = 64/81.<br>
{{{24*(170/177)/(64/81) = 29.17}}}<br>
The BMI of a person whose weight is 170 pounds and whose height is 64 inches is 29, to the nearest whole number.