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Finding the Fourth Proportional to 494.97, 742.55 and 170.43

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Solution

The fourth proportional to 494.97, 742.55 and 170.43 is: 255.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.97 : 742.55 = 170.43 : x
  2. Step 2: Convert to fraction form
    494.97/742.55 = 170.43/x
  3. Step 3: Cross multiply
    494.97x = 742.55 × 170.43
  4. Step 4: Simplify right side
    494.97x = 126,551.94
  5. Step 5: Solve for x
    x = 126,551.94/494.97
  6. Step 6: Final answer
    x = 255.68

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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.