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Finding the Fourth Proportional to 112.24, 167.25 and 108.55

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Solution

The fourth proportional to 112.24, 167.25 and 108.55 is: 161.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.24 : 167.25 = 108.55 : x
  2. Step 2: Convert to fraction form
    112.24/167.25 = 108.55/x
  3. Step 3: Cross multiply
    112.24x = 167.25 × 108.55
  4. Step 4: Simplify right side
    112.24x = 18,154.99
  5. Step 5: Solve for x
    x = 18,154.99/112.24
  6. Step 6: Final answer
    x = 161.75

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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.