12 : □ = □ : 4 = 8 : 16 - Mathematics

12 : `square` = `square` : 4 = 8 : 16

Fill in the Blanks

12 : 24 = 2 : 4 = 8 : 16

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

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

Find the fourth proportional to 1.5, 4.5 and 3.5

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

Find the third proportional to Rs. 3, Rs. 12

24 workers can build a wall in 15 days. How many days will 9 workers take to build a similar wall?

If 24 workers can build a wall in 15 days, how many days will 8 workers take to build a similar wall?

In covering 111 km, a car consumes 6 L of petrol. How many kilometers will it go to 10 L of petrol?

If a, b, c and d are in proportion, prove that: (a⁴ + c⁴) : (b⁴ + d⁴) = a² c² : b² d².

If a, b, c and d are in proportion, prove that: `abcd [(1/a^2 + 1/b^2 + 1/c^2 + 1/d^2]` = a² + b² + c² + d²

Choose the correct answer from the given options :

If x, 12, 8 and 32 are in proportion, then the value of x is

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40 persons : 200 persons = ₹ 15 : ₹ 75