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Finding the Fourth Proportional to 881.72, 1,323.97 and 850.28

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Solution

The fourth proportional to 881.72, 1,323.97 and 850.28 is: 1,276.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.72 : 1,323.97 = 850.28 : x
  2. Step 2: Convert to fraction form
    881.72/1,323.97 = 850.28/x
  3. Step 3: Cross multiply
    881.72x = 1,323.97 × 850.28
  4. Step 4: Simplify right side
    881.72x = 1,125,745.21
  5. Step 5: Solve for x
    x = 1,125,745.21/881.72
  6. Step 6: Final answer
    x = 1,276.76

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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.