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Finding the Fourth Proportional to 417.08, 625.61 and 124.58

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Solution

The fourth proportional to 417.08, 625.61 and 124.58 is: 186.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.08 : 625.61 = 124.58 : x
  2. Step 2: Convert to fraction form
    417.08/625.61 = 124.58/x
  3. Step 3: Cross multiply
    417.08x = 625.61 × 124.58
  4. Step 4: Simplify right side
    417.08x = 77,940.24
  5. Step 5: Solve for x
    x = 77,940.24/417.08
  6. Step 6: Final answer
    x = 186.87

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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.