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Finding the Fourth Proportional to 166.50, 229.88 and 108.38

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Solution

The fourth proportional to 166.50, 229.88 and 108.38 is: 149.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.50 : 229.88 = 108.38 : x
  2. Step 2: Convert to fraction form
    166.50/229.88 = 108.38/x
  3. Step 3: Cross multiply
    166.50x = 229.88 × 108.38
  4. Step 4: Simplify right side
    166.50x = 24,914.39
  5. Step 5: Solve for x
    x = 24,914.39/166.50
  6. Step 6: Final answer
    x = 149.64

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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.