SOLUTION: A building is casting a 100 ft. shadow at the same time that a 5 ft. post is casting a 1 ft. shadow. Write a proportion that involves the height of the building, the height of

Algebra ->  Proportions -> SOLUTION: A building is casting a 100 ft. shadow at the same time that a 5 ft. post is casting a 1 ft. shadow. Write a proportion that involves the height of the building, the height of       Log On


   

Question 110969: A building is casting a 100 ft. shadow at the same time that a 5 ft. post is casting a 1 ft. shadow.
Write a proportion that involves the height of the building, the height of the post, and legnths of the shadows.
How high is the building?

Found 2 solutions by scott8148, stanbon:
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x="height of building" ___ x/100=5/1

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
A building is casting a 100 ft. shadow at the same time that a 5 ft. post is casting a 1 ft. shadow.
Write a proportion that involves the height of the building, the height of the post, and length of the shadows.
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Let height of the building be "x":
Proportion:
x/100 = 5/1
x = 500 ft
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How high is the building?
The building is 500 ft. high
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Cheers,
Stan H.