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Finding the Fourth Proportional to 112.29, 167.61 and 104.04

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Solution

The fourth proportional to 112.29, 167.61 and 104.04 is: 155.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112.29 : 167.61 = 104.04 : x
  2. Step 2: Convert to fraction form
    112.29/167.61 = 104.04/x
  3. Step 3: Cross multiply
    112.29x = 167.61 × 104.04
  4. Step 4: Simplify right side
    112.29x = 17,439.16
  5. Step 5: Solve for x
    x = 17,439.16/112.29
  6. Step 6: Final answer
    x = 155.30

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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.