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Finding the Fourth Proportional to 356.60, 532.32 and 331.29

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Solution

The fourth proportional to 356.60, 532.32 and 331.29 is: 494.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    356.60 : 532.32 = 331.29 : x
  2. Step 2: Convert to fraction form
    356.60/532.32 = 331.29/x
  3. Step 3: Cross multiply
    356.60x = 532.32 × 331.29
  4. Step 4: Simplify right side
    356.60x = 176,352.91
  5. Step 5: Solve for x
    x = 176,352.91/356.60
  6. Step 6: Final answer
    x = 494.54

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.