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Finding the Fourth Proportional to 621.45, 932.57 and 361.97

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Solution

The fourth proportional to 621.45, 932.57 and 361.97 is: 543.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    621.45 : 932.57 = 361.97 : x
  2. Step 2: Convert to fraction form
    621.45/932.57 = 361.97/x
  3. Step 3: Cross multiply
    621.45x = 932.57 × 361.97
  4. Step 4: Simplify right side
    621.45x = 337,555.89
  5. Step 5: Solve for x
    x = 337,555.89/621.45
  6. Step 6: Final answer
    x = 543.17

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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.