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Finding the Fourth Proportional to 621.67, 932.51 and 296.86

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Solution

The fourth proportional to 621.67, 932.51 and 296.86 is: 445.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.67 : 932.51 = 296.86 : x
  2. Step 2: Convert to fraction form
    621.67/932.51 = 296.86/x
  3. Step 3: Cross multiply
    621.67x = 932.51 × 296.86
  4. Step 4: Simplify right side
    621.67x = 276,824.92
  5. Step 5: Solve for x
    x = 276,824.92/621.67
  6. Step 6: Final answer
    x = 445.29

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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.