Q 1: a, b, c and d are four numbers if a:b = c:d then a, b, c and d are in ______. Proportion Equation Ratio

Q 2: The equality of two ratios is called a _____. Equality Proportion Ratio

Q 3: The terms at the last of a proportion are called ______. Extremes Opposites Means

Q 4: The terms at the middle of a proportion are called ______. Center Means Extremes

Q 5: The product of extremes in a proportion = the product of ____ in the proportion. Extremes Middle Means

Q 6: The product of ____ in a proportion = the product of means in the proportion. Center Means Extremes

Q 7: If 3,7,9,x are in proportion then value of x = ____. 21 18 17

Q 8: If 2,5,10,x are in proportion then value of x = _____. 15 20 25

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