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Finding the Fourth Proportional to 170.66, 256.28 and 168.12

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Solution

The fourth proportional to 170.66, 256.28 and 168.12 is: 252.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.66 : 256.28 = 168.12 : x
  2. Step 2: Convert to fraction form
    170.66/256.28 = 168.12/x
  3. Step 3: Cross multiply
    170.66x = 256.28 × 168.12
  4. Step 4: Simplify right side
    170.66x = 43,084.95
  5. Step 5: Solve for x
    x = 43,084.95/170.66
  6. Step 6: Final answer
    x = 252.46

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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.