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Finding the Fourth Proportional to 498.01, 747.08 and 209.38

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Solution

The fourth proportional to 498.01, 747.08 and 209.38 is: 314.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.01 : 747.08 = 209.38 : x
  2. Step 2: Convert to fraction form
    498.01/747.08 = 209.38/x
  3. Step 3: Cross multiply
    498.01x = 747.08 × 209.38
  4. Step 4: Simplify right side
    498.01x = 156,423.61
  5. Step 5: Solve for x
    x = 156,423.61/498.01
  6. Step 6: Final answer
    x = 314.10

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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.