This is aptitude questions and answers section on Ratio and Proportion with explanation for various interview, competitive examinations and entrance tests.

1. 1: 3 = 1 2/3: x. The value of x is?
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2. What number has a 5:1 ratio to the number 10?
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3. If a: b = 7: 5, b: c = 9: 11, find a: b: c?
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4. If a: b = 3:4, b:c = 7:9, c:d = 5:7, find a:d?
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5. The inverse ratio of 3: 2: 1 is?
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