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Finding the Fourth Proportional to 417.97, 625.98 and 330.71

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Solution

The fourth proportional to 417.97, 625.98 and 330.71 is: 495.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    417.97 : 625.98 = 330.71 : x
  2. Step 2: Convert to fraction form
    417.97/625.98 = 330.71/x
  3. Step 3: Cross multiply
    417.97x = 625.98 × 330.71
  4. Step 4: Simplify right side
    417.97x = 207,019.41
  5. Step 5: Solve for x
    x = 207,019.41/417.97
  6. Step 6: Final answer
    x = 495.30

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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.