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Finding the Fourth Proportional to 124.27, 186.33 and 66.35

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Solution

The fourth proportional to 124.27, 186.33 and 66.35 is: 99.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.27 : 186.33 = 66.35 : x
  2. Step 2: Convert to fraction form
    124.27/186.33 = 66.35/x
  3. Step 3: Cross multiply
    124.27x = 186.33 × 66.35
  4. Step 4: Simplify right side
    124.27x = 12,363.71
  5. Step 5: Solve for x
    x = 12,363.71/124.27
  6. Step 6: Final answer
    x = 99.49

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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.