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Finding the Fourth Proportional to 502.88, 754.37 and 451.20

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Solution

The fourth proportional to 502.88, 754.37 and 451.20 is: 676.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.88 : 754.37 = 451.20 : x
  2. Step 2: Convert to fraction form
    502.88/754.37 = 451.20/x
  3. Step 3: Cross multiply
    502.88x = 754.37 × 451.20
  4. Step 4: Simplify right side
    502.88x = 340,371.18
  5. Step 5: Solve for x
    x = 340,371.18/502.88
  6. Step 6: Final answer
    x = 676.85

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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.