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Finding the Fourth Proportional to 166.98, 230.42 and 101.49

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Solution

The fourth proportional to 166.98, 230.42 and 101.49 is: 140.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.98 : 230.42 = 101.49 : x
  2. Step 2: Convert to fraction form
    166.98/230.42 = 101.49/x
  3. Step 3: Cross multiply
    166.98x = 230.42 × 101.49
  4. Step 4: Simplify right side
    166.98x = 23,384.82
  5. Step 5: Solve for x
    x = 23,384.82/166.98
  6. Step 6: Final answer
    x = 140.05

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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.