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Finding the Fourth Proportional to 166.60, 229.78 and 144.68

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Solution

The fourth proportional to 166.60, 229.78 and 144.68 is: 199.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    166.60 : 229.78 = 144.68 : x
  2. Step 2: Convert to fraction form
    166.60/229.78 = 144.68/x
  3. Step 3: Cross multiply
    166.60x = 229.78 × 144.68
  4. Step 4: Simplify right side
    166.60x = 33,244.57
  5. Step 5: Solve for x
    x = 33,244.57/166.60
  6. Step 6: Final answer
    x = 199.55

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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.