3 : 5 : : □ : 20

3 : 5 : : `square` : 20

Fill in the Blanks

3 : 5 : : 12 : 20

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Chapter 3: Ratio and Proportion - Exercise 3.3 [Page 58]

Chapter 3 Ratio and Proportion
Exercise 3.3 | Q 1. (i) | Page 58

Using properties of proportion, solve for x:

`(sqrt(x + 1) + sqrt(x - 1))/(sqrt(x + 1) - sqrt(x - 1)) = (4x - 1)/2`

Find the value of the unknown in the following proportion :

Find the mean proportion of the following :

0.09 and 0.25

If ax = by = cz, prove that
`x^2/(yz) + y^2/(zx) + z^2/(xy) = (bc)/a^2 + (ca)/b^2 + (ab)/c^2`.

Find the value of x in the following proportions : x : 50 :: 3 : 2

Determine if the following numbers are in proportion:

150, 200, 250, 300

If 12 L of diesel is consumed by a car in covering a distance of 222 km, how many kilometers will it go in 22 L of diesel?

The ratio 92 : 115 in its simplest for is

If the cost of 12 pens is Rs 138, then the cost of 14 such pens is

If `a/c = c/d = c/f` prove that : `bd f[(a + b)/b + (c + d)/d + (c + f)/f]^3` = 27(a + b)(c + d)(e + f)