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Finding the Fourth Proportional to 166.80, 250.24 and 84.58

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Solution

The fourth proportional to 166.80, 250.24 and 84.58 is: 126.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.80 : 250.24 = 84.58 : x
  2. Step 2: Convert to fraction form
    166.80/250.24 = 84.58/x
  3. Step 3: Cross multiply
    166.80x = 250.24 × 84.58
  4. Step 4: Simplify right side
    166.80x = 21,165.30
  5. Step 5: Solve for x
    x = 21,165.30/166.80
  6. Step 6: Final answer
    x = 126.89

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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.