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Finding the Fourth Proportional to 2,200.92, 3,301.04 and 640.60

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Solution

The fourth proportional to 2,200.92, 3,301.04 and 640.60 is: 960.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,200.92 : 3,301.04 = 640.60 : x
  2. Step 2: Convert to fraction form
    2,200.92/3,301.04 = 640.60/x
  3. Step 3: Cross multiply
    2,200.92x = 3,301.04 × 640.60
  4. Step 4: Simplify right side
    2,200.92x = 2,114,654.54
  5. Step 5: Solve for x
    x = 2,114,654.54/2,200.92
  6. Step 6: Final answer
    x = 960.81

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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.