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Finding the Fourth Proportional to 440.53, 660.80 and 166.54

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Solution

The fourth proportional to 440.53, 660.80 and 166.54 is: 249.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.53 : 660.80 = 166.54 : x
  2. Step 2: Convert to fraction form
    440.53/660.80 = 166.54/x
  3. Step 3: Cross multiply
    440.53x = 660.80 × 166.54
  4. Step 4: Simplify right side
    440.53x = 110,051.25
  5. Step 5: Solve for x
    x = 110,051.25/440.53
  6. Step 6: Final answer
    x = 249.82

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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.