Finding the Fourth Proportional to 135.12, 201.66 and 130.44
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Solution
The fourth proportional to 135.12, 201.66 and 130.44 is: 194.68
Step by Step Solution
- Step 1: Write the proportion equation
135.12 : 201.66 = 130.44 : x - Step 2: Convert to fraction form
135.12/201.66 = 130.44/x - Step 3: Cross multiply
135.12x = 201.66 × 130.44 - Step 4: Simplify right side
135.12x = 26,304.53 - Step 5: Solve for x
x = 26,304.53/135.12 - Step 6: Final answer
x = 194.68
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Double scale
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.