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Finding the Fourth Proportional to 605.31, 834.95 and 381.26

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Solution

The fourth proportional to 605.31, 834.95 and 381.26 is: 525.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.31 : 834.95 = 381.26 : x
  2. Step 2: Convert to fraction form
    605.31/834.95 = 381.26/x
  3. Step 3: Cross multiply
    605.31x = 834.95 × 381.26
  4. Step 4: Simplify right side
    605.31x = 318,333.04
  5. Step 5: Solve for x
    x = 318,333.04/605.31
  6. Step 6: Final answer
    x = 525.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.