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Finding the Fourth Proportional to 622.79, 932.31 and 414.35

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Solution

The fourth proportional to 622.79, 932.31 and 414.35 is: 620.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.79 : 932.31 = 414.35 : x
  2. Step 2: Convert to fraction form
    622.79/932.31 = 414.35/x
  3. Step 3: Cross multiply
    622.79x = 932.31 × 414.35
  4. Step 4: Simplify right side
    622.79x = 386,297.99
  5. Step 5: Solve for x
    x = 386,297.99/622.79
  6. Step 6: Final answer
    x = 620.28

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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.