SOLUTION: A triangle drawn on a map has sides of lenghts 7 cm, 11 cm, and 15 cm. The shortest of the corresponding real-life distances is 120 km. Find the longest of the real-life distances.

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Question 709288: A triangle drawn on a map has sides of lenghts 7 cm, 11 cm, and 15 cm. The shortest of the corresponding real-life distances is 120 km. Find the longest of the real-life distances.
Answer by stanbon(75887) About Me  (Show Source):
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A triangle drawn on a map has sides of lenghts 7 cm, 11 cm, and 15 cm. The shortest of the corresponding real-life distances is 120 km. Find the longest of the real-life distances.
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Use a proportion to find the life distance corresponding to 11 cm:
x/11 = 120/7
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x = 11(120/7)
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x = 188.57 km
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Use a proportion to find the life distance corresponding to 15 cm:
x/15 = 120/7
x = 257.14 km
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Cheers,
Stan H.
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