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Finding the Fourth Proportional to 2,202.78, 3,304.14 and 663.78

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Solution

The fourth proportional to 2,202.78, 3,304.14 and 663.78 is: 995.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,202.78 : 3,304.14 = 663.78 : x
  2. Step 2: Convert to fraction form
    2,202.78/3,304.14 = 663.78/x
  3. Step 3: Cross multiply
    2,202.78x = 3,304.14 × 663.78
  4. Step 4: Simplify right side
    2,202.78x = 2,193,222.05
  5. Step 5: Solve for x
    x = 2,193,222.05/2,202.78
  6. Step 6: Final answer
    x = 995.66

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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.