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Finding the Fourth Proportional to 622.41, 932.13 and 404.79

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Solution

The fourth proportional to 622.41, 932.13 and 404.79 is: 606.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.41 : 932.13 = 404.79 : x
  2. Step 2: Convert to fraction form
    622.41/932.13 = 404.79/x
  3. Step 3: Cross multiply
    622.41x = 932.13 × 404.79
  4. Step 4: Simplify right side
    622.41x = 377,316.90
  5. Step 5: Solve for x
    x = 377,316.90/622.41
  6. Step 6: Final answer
    x = 606.22

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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.