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Finding the Fourth Proportional to 605.96, 906.90 and 331.32

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Solution

The fourth proportional to 605.96, 906.90 and 331.32 is: 495.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.96 : 906.90 = 331.32 : x
  2. Step 2: Convert to fraction form
    605.96/906.90 = 331.32/x
  3. Step 3: Cross multiply
    605.96x = 906.90 × 331.32
  4. Step 4: Simplify right side
    605.96x = 300,474.11
  5. Step 5: Solve for x
    x = 300,474.11/605.96
  6. Step 6: Final answer
    x = 495.86

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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.