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Finding the Fourth Proportional to 417.74, 626.71 and 125.24

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Solution

The fourth proportional to 417.74, 626.71 and 125.24 is: 187.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.74 : 626.71 = 125.24 : x
  2. Step 2: Convert to fraction form
    417.74/626.71 = 125.24/x
  3. Step 3: Cross multiply
    417.74x = 626.71 × 125.24
  4. Step 4: Simplify right side
    417.74x = 78,487.28
  5. Step 5: Solve for x
    x = 78,487.28/417.74
  6. Step 6: Final answer
    x = 187.89

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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.