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Finding the Fourth Proportional to 502.88, 753.96 and 286.16

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Solution

The fourth proportional to 502.88, 753.96 and 286.16 is: 429.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.88 : 753.96 = 286.16 : x
  2. Step 2: Convert to fraction form
    502.88/753.96 = 286.16/x
  3. Step 3: Cross multiply
    502.88x = 753.96 × 286.16
  4. Step 4: Simplify right side
    502.88x = 215,753.19
  5. Step 5: Solve for x
    x = 215,753.19/502.88
  6. Step 6: Final answer
    x = 429.04

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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.