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Finding the Fourth Proportional to 170.62, 254.12 and 169.72

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Solution

The fourth proportional to 170.62, 254.12 and 169.72 is: 252.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.62 : 254.12 = 169.72 : x
  2. Step 2: Convert to fraction form
    170.62/254.12 = 169.72/x
  3. Step 3: Cross multiply
    170.62x = 254.12 × 169.72
  4. Step 4: Simplify right side
    170.62x = 43,129.25
  5. Step 5: Solve for x
    x = 43,129.25/170.62
  6. Step 6: Final answer
    x = 252.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.