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Finding the Fourth Proportional to 510.88, 766.31 and 168.88

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Solution

The fourth proportional to 510.88, 766.31 and 168.88 is: 253.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    510.88 : 766.31 = 168.88 : x
  2. Step 2: Convert to fraction form
    510.88/766.31 = 168.88/x
  3. Step 3: Cross multiply
    510.88x = 766.31 × 168.88
  4. Step 4: Simplify right side
    510.88x = 129,414.43
  5. Step 5: Solve for x
    x = 129,414.43/510.88
  6. Step 6: Final answer
    x = 253.32

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.