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प्रश्न
Find the mean proportion of the following :
`28/3` and `175/27`
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उत्तर
Let x be the mean proportion
`28/3 : "x" : : "x" : 175/27 `
`=> "x" xx "x" = 28/3 xx 175/27`
`=> "x"^2 = 4900/81`
`=> "x" = sqrt(4900/81)`
`=> "x" = 70/9`
The mean proportion is `70/9`
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5 : `square` : : 10 : 8 : : 15 : `square`
