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Finding the Fourth Proportional to 169.75, 235.30 and 166.92

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Solution

The fourth proportional to 169.75, 235.30 and 166.92 is: 231.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.75 : 235.30 = 166.92 : x
  2. Step 2: Convert to fraction form
    169.75/235.30 = 166.92/x
  3. Step 3: Cross multiply
    169.75x = 235.30 × 166.92
  4. Step 4: Simplify right side
    169.75x = 39,276.28
  5. Step 5: Solve for x
    x = 39,276.28/169.75
  6. Step 6: Final answer
    x = 231.38

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.