Question

A house is drawn to the scale of 1/4in = 5 ft. Its rectangular kitchen measures

4.5 inches by 6.5 inches on the blueprints. What is the actual length and width of the kitchen?
Find the actual area of the kitchen.

Answer 1

1 : 4 1/2 :: 8 1/5 : x proportion

x = (4 1/2)(8 1/5) product of means/extremes

x = (9/2)(41/5) change improper fraction

x = 369/10 multiply

x = 36.9 change to decimal