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Finding the Fourth Proportional to 502.88, 754.26 and 132.72

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Solution

The fourth proportional to 502.88, 754.26 and 132.72 is: 199.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.88 : 754.26 = 132.72 : x
  2. Step 2: Convert to fraction form
    502.88/754.26 = 132.72/x
  3. Step 3: Cross multiply
    502.88x = 754.26 × 132.72
  4. Step 4: Simplify right side
    502.88x = 100,105.39
  5. Step 5: Solve for x
    x = 100,105.39/502.88
  6. Step 6: Final answer
    x = 199.07

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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.