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Finding the Fourth Proportional to 2,203.27, 3,304.36 and 642.87

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Solution

The fourth proportional to 2,203.27, 3,304.36 and 642.87 is: 964.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,203.27 : 3,304.36 = 642.87 : x
  2. Step 2: Convert to fraction form
    2,203.27/3,304.36 = 642.87/x
  3. Step 3: Cross multiply
    2,203.27x = 3,304.36 × 642.87
  4. Step 4: Simplify right side
    2,203.27x = 2,124,273.91
  5. Step 5: Solve for x
    x = 2,124,273.91/2,203.27
  6. Step 6: Final answer
    x = 964.15

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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.