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Finding the Fourth Proportional to 2,002.20, 3,003.58 and 615.65

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Solution

The fourth proportional to 2,002.20, 3,003.58 and 615.65 is: 923.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,002.20 : 3,003.58 = 615.65 : x
  2. Step 2: Convert to fraction form
    2,002.20/3,003.58 = 615.65/x
  3. Step 3: Cross multiply
    2,002.20x = 3,003.58 × 615.65
  4. Step 4: Simplify right side
    2,002.20x = 1,849,149.55
  5. Step 5: Solve for x
    x = 1,849,149.55/2,002.20
  6. Step 6: Final answer
    x = 923.56

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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.