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Finding the Fourth Proportional to 622.90, 932.38 and 348.16

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Solution

The fourth proportional to 622.90, 932.38 and 348.16 is: 521.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    622.90 : 932.38 = 348.16 : x
  2. Step 2: Convert to fraction form
    622.90/932.38 = 348.16/x
  3. Step 3: Cross multiply
    622.90x = 932.38 × 348.16
  4. Step 4: Simplify right side
    622.90x = 324,617.72
  5. Step 5: Solve for x
    x = 324,617.72/622.90
  6. Step 6: Final answer
    x = 521.14

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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.