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Finding the Fourth Proportional to 440.00, 660.09 and 131.84

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Solution

The fourth proportional to 440.00, 660.09 and 131.84 is: 197.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.00 : 660.09 = 131.84 : x
  2. Step 2: Convert to fraction form
    440.00/660.09 = 131.84/x
  3. Step 3: Cross multiply
    440.00x = 660.09 × 131.84
  4. Step 4: Simplify right side
    440.00x = 87,022.97
  5. Step 5: Solve for x
    x = 87,022.97/440.00
  6. Step 6: Final answer
    x = 197.78

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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.