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Finding the Fourth Proportional to 498.76, 748.44 and 224.78

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Solution

The fourth proportional to 498.76, 748.44 and 224.78 is: 337.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    498.76 : 748.44 = 224.78 : x
  2. Step 2: Convert to fraction form
    498.76/748.44 = 224.78/x
  3. Step 3: Cross multiply
    498.76x = 748.44 × 224.78
  4. Step 4: Simplify right side
    498.76x = 168,230.60
  5. Step 5: Solve for x
    x = 168,230.60/498.76
  6. Step 6: Final answer
    x = 337.30

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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.