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Finding the Fourth Proportional to 502.36, 753.10 and 258.76

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Solution

The fourth proportional to 502.36, 753.10 and 258.76 is: 387.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.36 : 753.10 = 258.76 : x
  2. Step 2: Convert to fraction form
    502.36/753.10 = 258.76/x
  3. Step 3: Cross multiply
    502.36x = 753.10 × 258.76
  4. Step 4: Simplify right side
    502.36x = 194,872.16
  5. Step 5: Solve for x
    x = 194,872.16/502.36
  6. Step 6: Final answer
    x = 387.91

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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.