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Finding the Fourth Proportional to 605.43, 908.24 and 331.56

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Solution

The fourth proportional to 605.43, 908.24 and 331.56 is: 497.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.43 : 908.24 = 331.56 : x
  2. Step 2: Convert to fraction form
    605.43/908.24 = 331.56/x
  3. Step 3: Cross multiply
    605.43x = 908.24 × 331.56
  4. Step 4: Simplify right side
    605.43x = 301,134.40
  5. Step 5: Solve for x
    x = 301,134.40/605.43
  6. Step 6: Final answer
    x = 497.39

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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.