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Finding the Fourth Proportional to 502.09, 753.00 and 136.79

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Solution

The fourth proportional to 502.09, 753.00 and 136.79 is: 205.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    502.09 : 753.00 = 136.79 : x
  2. Step 2: Convert to fraction form
    502.09/753.00 = 136.79/x
  3. Step 3: Cross multiply
    502.09x = 753.00 × 136.79
  4. Step 4: Simplify right side
    502.09x = 103,006.81
  5. Step 5: Solve for x
    x = 103,006.81/502.09
  6. Step 6: Final answer
    x = 205.15

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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.