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Finding the Fourth Proportional to 495.67, 742.99 and 170.86

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Solution

The fourth proportional to 495.67, 742.99 and 170.86 is: 256.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.67 : 742.99 = 170.86 : x
  2. Step 2: Convert to fraction form
    495.67/742.99 = 170.86/x
  3. Step 3: Cross multiply
    495.67x = 742.99 × 170.86
  4. Step 4: Simplify right side
    495.67x = 126,947.27
  5. Step 5: Solve for x
    x = 126,947.27/495.67
  6. Step 6: Final answer
    x = 256.11

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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.