Question

Models were build using a scale of 1 in : 50 ft. Find the height of the model for a building that is actually 470ft. tall.

Someone pls help 

Answer 1

proportion: a:b = c:d where ad = bc

a = 1 ; b = 50 ; c = x ; d = 470

1 inches : 50 feet = x inches : 470 feet
1* 470 = 50x
470/50 = x
9.4 = x

The model should be 9.4 inches high.