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Finding the Fourth Proportional to 605.62, 908.70 and 331.62

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Solution

The fourth proportional to 605.62, 908.70 and 331.62 is: 497.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.62 : 908.70 = 331.62 : x
  2. Step 2: Convert to fraction form
    605.62/908.70 = 331.62/x
  3. Step 3: Cross multiply
    605.62x = 908.70 × 331.62
  4. Step 4: Simplify right side
    605.62x = 301,343.09
  5. Step 5: Solve for x
    x = 301,343.09/605.62
  6. Step 6: Final answer
    x = 497.58

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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.