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Finding the Fourth Proportional to 170.32, 254.17 and 168.28

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Solution

The fourth proportional to 170.32, 254.17 and 168.28 is: 251.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.32 : 254.17 = 168.28 : x
  2. Step 2: Convert to fraction form
    170.32/254.17 = 168.28/x
  3. Step 3: Cross multiply
    170.32x = 254.17 × 168.28
  4. Step 4: Simplify right side
    170.32x = 42,771.73
  5. Step 5: Solve for x
    x = 42,771.73/170.32
  6. Step 6: Final answer
    x = 251.13

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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.