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Finding the Fourth Proportional to 2,220.04, 3,329.98 and 681

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Solution

The fourth proportional to 2,220.04, 3,329.98 and 681 is: 1,021.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.04 : 3,329.98 = 681 : x
  2. Step 2: Convert to fraction form
    2,220.04/3,329.98 = 681/x
  3. Step 3: Cross multiply
    2,220.04x = 3,329.98 × 681
  4. Step 4: Simplify right side
    2,220.04x = 2,267,716.38
  5. Step 5: Solve for x
    x = 2,267,716.38/2,220.04
  6. Step 6: Final answer
    x = 1,021.48

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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.