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Finding the Fourth Proportional to 171.03, 236.10 and 115.11

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Solution

The fourth proportional to 171.03, 236.10 and 115.11 is: 158.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.03 : 236.10 = 115.11 : x
  2. Step 2: Convert to fraction form
    171.03/236.10 = 115.11/x
  3. Step 3: Cross multiply
    171.03x = 236.10 × 115.11
  4. Step 4: Simplify right side
    171.03x = 27,177.47
  5. Step 5: Solve for x
    x = 27,177.47/171.03
  6. Step 6: Final answer
    x = 158.90

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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.