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Finding the Fourth Proportional to 171.11, 236.33 and 169.91

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Solution

The fourth proportional to 171.11, 236.33 and 169.91 is: 234.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.11 : 236.33 = 169.91 : x
  2. Step 2: Convert to fraction form
    171.11/236.33 = 169.91/x
  3. Step 3: Cross multiply
    171.11x = 236.33 × 169.91
  4. Step 4: Simplify right side
    171.11x = 40,154.07
  5. Step 5: Solve for x
    x = 40,154.07/171.11
  6. Step 6: Final answer
    x = 234.68

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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.