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Finding the Fourth Proportional to 440.06, 660.98 and 371.70

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Solution

The fourth proportional to 440.06, 660.98 and 371.70 is: 558.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    440.06 : 660.98 = 371.70 : x
  2. Step 2: Convert to fraction form
    440.06/660.98 = 371.70/x
  3. Step 3: Cross multiply
    440.06x = 660.98 × 371.70
  4. Step 4: Simplify right side
    440.06x = 245,687.20
  5. Step 5: Solve for x
    x = 245,687.20/440.06
  6. Step 6: Final answer
    x = 558.31

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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.