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Finding the Fourth Proportional to 502.64, 754.08 and 499.20

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Solution

The fourth proportional to 502.64, 754.08 and 499.20 is: 748.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.64 : 754.08 = 499.20 : x
  2. Step 2: Convert to fraction form
    502.64/754.08 = 499.20/x
  3. Step 3: Cross multiply
    502.64x = 754.08 × 499.20
  4. Step 4: Simplify right side
    502.64x = 376,436.74
  5. Step 5: Solve for x
    x = 376,436.74/502.64
  6. Step 6: Final answer
    x = 748.92

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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.