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Finding the Fourth Proportional to 171.11, 235.80 and 163.37

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Solution

The fourth proportional to 171.11, 235.80 and 163.37 is: 225.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.11 : 235.80 = 163.37 : x
  2. Step 2: Convert to fraction form
    171.11/235.80 = 163.37/x
  3. Step 3: Cross multiply
    171.11x = 235.80 × 163.37
  4. Step 4: Simplify right side
    171.11x = 38,521.47
  5. Step 5: Solve for x
    x = 38,521.47/171.11
  6. Step 6: Final answer
    x = 225.13

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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.