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Finding the Fourth Proportional to 502.29, 753.06 and 347.78

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Solution

The fourth proportional to 502.29, 753.06 and 347.78 is: 521.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.29 : 753.06 = 347.78 : x
  2. Step 2: Convert to fraction form
    502.29/753.06 = 347.78/x
  3. Step 3: Cross multiply
    502.29x = 753.06 × 347.78
  4. Step 4: Simplify right side
    502.29x = 261,901.09
  5. Step 5: Solve for x
    x = 261,901.09/502.29
  6. Step 6: Final answer
    x = 521.41

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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.