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Finding the Fourth Proportional to 868.82, 1,198.93 and 537.28

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Solution

The fourth proportional to 868.82, 1,198.93 and 537.28 is: 741.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    868.82 : 1,198.93 = 537.28 : x
  2. Step 2: Convert to fraction form
    868.82/1,198.93 = 537.28/x
  3. Step 3: Cross multiply
    868.82x = 1,198.93 × 537.28
  4. Step 4: Simplify right side
    868.82x = 644,152.43
  5. Step 5: Solve for x
    x = 644,152.43/868.82
  6. Step 6: Final answer
    x = 741.41

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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.