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Finding the Fourth Proportional to 502.05, 753.15 and 136.86

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Solution

The fourth proportional to 502.05, 753.15 and 136.86 is: 205.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.05 : 753.15 = 136.86 : x
  2. Step 2: Convert to fraction form
    502.05/753.15 = 136.86/x
  3. Step 3: Cross multiply
    502.05x = 753.15 × 136.86
  4. Step 4: Simplify right side
    502.05x = 103,076.11
  5. Step 5: Solve for x
    x = 103,076.11/502.05
  6. Step 6: Final answer
    x = 205.31

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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.