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Finding the Fourth Proportional to 171.11, 258.05 and 163.01

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Solution

The fourth proportional to 171.11, 258.05 and 163.01 is: 245.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.11 : 258.05 = 163.01 : x
  2. Step 2: Convert to fraction form
    171.11/258.05 = 163.01/x
  3. Step 3: Cross multiply
    171.11x = 258.05 × 163.01
  4. Step 4: Simplify right side
    171.11x = 42,065.78
  5. Step 5: Solve for x
    x = 42,065.78/171.11
  6. Step 6: Final answer
    x = 245.84

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.