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Finding the Fourth Proportional to 166.20, 249.23 and 57.95

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Solution

The fourth proportional to 166.20, 249.23 and 57.95 is: 86.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.20 : 249.23 = 57.95 : x
  2. Step 2: Convert to fraction form
    166.20/249.23 = 57.95/x
  3. Step 3: Cross multiply
    166.20x = 249.23 × 57.95
  4. Step 4: Simplify right side
    166.20x = 14,442.59
  5. Step 5: Solve for x
    x = 14,442.59/166.20
  6. Step 6: Final answer
    x = 86.90

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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.