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Finding the Fourth Proportional to 605.18, 834.18 and 494.46

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Solution

The fourth proportional to 605.18, 834.18 and 494.46 is: 681.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    605.18 : 834.18 = 494.46 : x
  2. Step 2: Convert to fraction form
    605.18/834.18 = 494.46/x
  3. Step 3: Cross multiply
    605.18x = 834.18 × 494.46
  4. Step 4: Simplify right side
    605.18x = 412,468.64
  5. Step 5: Solve for x
    x = 412,468.64/605.18
  6. Step 6: Final answer
    x = 681.56

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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.