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Finding the Fourth Proportional to 440.45, 660.68 and 166.22

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Solution

The fourth proportional to 440.45, 660.68 and 166.22 is: 249.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.45 : 660.68 = 166.22 : x
  2. Step 2: Convert to fraction form
    440.45/660.68 = 166.22/x
  3. Step 3: Cross multiply
    440.45x = 660.68 × 166.22
  4. Step 4: Simplify right side
    440.45x = 109,818.23
  5. Step 5: Solve for x
    x = 109,818.23/440.45
  6. Step 6: Final answer
    x = 249.33

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Double scale
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Similar ratio
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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.