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Finding the Fourth Proportional to 605.57, 908.87 and 331.85

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Solution

The fourth proportional to 605.57, 908.87 and 331.85 is: 498.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.57 : 908.87 = 331.85 : x
  2. Step 2: Convert to fraction form
    605.57/908.87 = 331.85/x
  3. Step 3: Cross multiply
    605.57x = 908.87 × 331.85
  4. Step 4: Simplify right side
    605.57x = 301,606.85
  5. Step 5: Solve for x
    x = 301,606.85/605.57
  6. Step 6: Final answer
    x = 498.05

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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.