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Finding the Fourth Proportional to 500.20, 748.54 and 326.76

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Solution

The fourth proportional to 500.20, 748.54 and 326.76 is: 488.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.20 : 748.54 = 326.76 : x
  2. Step 2: Convert to fraction form
    500.20/748.54 = 326.76/x
  3. Step 3: Cross multiply
    500.20x = 748.54 × 326.76
  4. Step 4: Simplify right side
    500.20x = 244,592.93
  5. Step 5: Solve for x
    x = 244,592.93/500.20
  6. Step 6: Final answer
    x = 488.99

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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.