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Finding the Fourth Proportional to 166.10, 248.67 and 108.38

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Solution

The fourth proportional to 166.10, 248.67 and 108.38 is: 162.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.10 : 248.67 = 108.38 : x
  2. Step 2: Convert to fraction form
    166.10/248.67 = 108.38/x
  3. Step 3: Cross multiply
    166.10x = 248.67 × 108.38
  4. Step 4: Simplify right side
    166.10x = 26,951.48
  5. Step 5: Solve for x
    x = 26,951.48/166.10
  6. Step 6: Final answer
    x = 162.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.