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Finding the Fourth Proportional to 502.24, 752.76 and 285.96

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Solution

The fourth proportional to 502.24, 752.76 and 285.96 is: 428.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.24 : 752.76 = 285.96 : x
  2. Step 2: Convert to fraction form
    502.24/752.76 = 285.96/x
  3. Step 3: Cross multiply
    502.24x = 752.76 × 285.96
  4. Step 4: Simplify right side
    502.24x = 215,259.25
  5. Step 5: Solve for x
    x = 215,259.25/502.24
  6. Step 6: Final answer
    x = 428.60

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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.