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Finding the Fourth Proportional to 502.20, 754.92 and 358.92

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Solution

The fourth proportional to 502.20, 754.92 and 358.92 is: 539.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.20 : 754.92 = 358.92 : x
  2. Step 2: Convert to fraction form
    502.20/754.92 = 358.92/x
  3. Step 3: Cross multiply
    502.20x = 754.92 × 358.92
  4. Step 4: Simplify right side
    502.20x = 270,955.89
  5. Step 5: Solve for x
    x = 270,955.89/502.20
  6. Step 6: Final answer
    x = 539.54

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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.