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Finding the Fourth Proportional to 886.92, 1,327.92 and 669.84

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Solution

The fourth proportional to 886.92, 1,327.92 and 669.84 is: 1,002.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    886.92 : 1,327.92 = 669.84 : x
  2. Step 2: Convert to fraction form
    886.92/1,327.92 = 669.84/x
  3. Step 3: Cross multiply
    886.92x = 1,327.92 × 669.84
  4. Step 4: Simplify right side
    886.92x = 889,493.93
  5. Step 5: Solve for x
    x = 889,493.93/886.92
  6. Step 6: Final answer
    x = 1,002.90

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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.