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Finding the Fourth Proportional to 171.54, 234.95 and 165.42

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Solution

The fourth proportional to 171.54, 234.95 and 165.42 is: 226.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.54 : 234.95 = 165.42 : x
  2. Step 2: Convert to fraction form
    171.54/234.95 = 165.42/x
  3. Step 3: Cross multiply
    171.54x = 234.95 × 165.42
  4. Step 4: Simplify right side
    171.54x = 38,864.60
  5. Step 5: Solve for x
    x = 38,864.60/171.54
  6. Step 6: Final answer
    x = 226.56

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.