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Finding the Fourth Proportional to 605.70, 908.18 and 331.41

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Solution

The fourth proportional to 605.70, 908.18 and 331.41 is: 496.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.70 : 908.18 = 331.41 : x
  2. Step 2: Convert to fraction form
    605.70/908.18 = 331.41/x
  3. Step 3: Cross multiply
    605.70x = 908.18 × 331.41
  4. Step 4: Simplify right side
    605.70x = 300,979.93
  5. Step 5: Solve for x
    x = 300,979.93/605.70
  6. Step 6: Final answer
    x = 496.91

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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.