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State true or false.

72:84 and 186:217 are in proportion.

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True

False

answer is A.

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Detailed Solution

We have to find that 72:84 and 186:217 are in proportion or not.
Applying the means-extremes property, we get,
Product of means,

⇒ 84 × 186

⇒ 15624

Product of extremes,

⇒ 72 × 217

⇒ 15624

Thus, product of means = product of extremes.
Hence, it is true that 72:84 and 186:217 are in proportion.
Therefore, option 1 is correct.

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