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Finding the Fourth Proportional to 888.38, 1,230.94 and 868.22

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Solution

The fourth proportional to 888.38, 1,230.94 and 868.22 is: 1,203.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.38 : 1,230.94 = 868.22 : x
  2. Step 2: Convert to fraction form
    888.38/1,230.94 = 868.22/x
  3. Step 3: Cross multiply
    888.38x = 1,230.94 × 868.22
  4. Step 4: Simplify right side
    888.38x = 1,068,722.39
  5. Step 5: Solve for x
    x = 1,068,722.39/888.38
  6. Step 6: Final answer
    x = 1,203.00

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.