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Finding the Fourth Proportional to 166.14, 230.40 and 149.94

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Solution

The fourth proportional to 166.14, 230.40 and 149.94 is: 207.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.14 : 230.40 = 149.94 : x
  2. Step 2: Convert to fraction form
    166.14/230.40 = 149.94/x
  3. Step 3: Cross multiply
    166.14x = 230.40 × 149.94
  4. Step 4: Simplify right side
    166.14x = 34,546.18
  5. Step 5: Solve for x
    x = 34,546.18/166.14
  6. Step 6: Final answer
    x = 207.93

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.