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Finding the Fourth Proportional to 167.02, 230.57 and 111.85

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Solution

The fourth proportional to 167.02, 230.57 and 111.85 is: 154.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.02 : 230.57 = 111.85 : x
  2. Step 2: Convert to fraction form
    167.02/230.57 = 111.85/x
  3. Step 3: Cross multiply
    167.02x = 230.57 × 111.85
  4. Step 4: Simplify right side
    167.02x = 25,789.25
  5. Step 5: Solve for x
    x = 25,789.25/167.02
  6. Step 6: Final answer
    x = 154.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.