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Finding the Fourth Proportional to 166.57, 229.84 and 92.88

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Solution

The fourth proportional to 166.57, 229.84 and 92.88 is: 128.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.57 : 229.84 = 92.88 : x
  2. Step 2: Convert to fraction form
    166.57/229.84 = 92.88/x
  3. Step 3: Cross multiply
    166.57x = 229.84 × 92.88
  4. Step 4: Simplify right side
    166.57x = 21,347.31
  5. Step 5: Solve for x
    x = 21,347.31/166.57
  6. Step 6: Final answer
    x = 128.16

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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.