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Finding the Fourth Proportional to 1,472.67, 2,209.14 and 498.78

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Solution

The fourth proportional to 1,472.67, 2,209.14 and 498.78 is: 748.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,472.67 : 2,209.14 = 498.78 : x
  2. Step 2: Convert to fraction form
    1,472.67/2,209.14 = 498.78/x
  3. Step 3: Cross multiply
    1,472.67x = 2,209.14 × 498.78
  4. Step 4: Simplify right side
    1,472.67x = 1,101,874.85
  5. Step 5: Solve for x
    x = 1,101,874.85/1,472.67
  6. Step 6: Final answer
    x = 748.22

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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.