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Finding the Fourth Proportional to 1,241.03, 1,713.28 and 868.33

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Solution

The fourth proportional to 1,241.03, 1,713.28 and 868.33 is: 1,198.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.03 : 1,713.28 = 868.33 : x
  2. Step 2: Convert to fraction form
    1,241.03/1,713.28 = 868.33/x
  3. Step 3: Cross multiply
    1,241.03x = 1,713.28 × 868.33
  4. Step 4: Simplify right side
    1,241.03x = 1,487,692.42
  5. Step 5: Solve for x
    x = 1,487,692.42/1,241.03
  6. Step 6: Final answer
    x = 1,198.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.