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Finding the Fourth Proportional to 475.38, 712.88 and 167.18

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Solution

The fourth proportional to 475.38, 712.88 and 167.18 is: 250.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    475.38 : 712.88 = 167.18 : x
  2. Step 2: Convert to fraction form
    475.38/712.88 = 167.18/x
  3. Step 3: Cross multiply
    475.38x = 712.88 × 167.18
  4. Step 4: Simplify right side
    475.38x = 119,179.28
  5. Step 5: Solve for x
    x = 119,179.28/475.38
  6. Step 6: Final answer
    x = 250.70

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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.