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Finding the Fourth Proportional to 882.76, 1,321.38 and 676.64

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Solution

The fourth proportional to 882.76, 1,321.38 and 676.64 is: 1,012.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    882.76 : 1,321.38 = 676.64 : x
  2. Step 2: Convert to fraction form
    882.76/1,321.38 = 676.64/x
  3. Step 3: Cross multiply
    882.76x = 1,321.38 × 676.64
  4. Step 4: Simplify right side
    882.76x = 894,098.56
  5. Step 5: Solve for x
    x = 894,098.56/882.76
  6. Step 6: Final answer
    x = 1,012.84

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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.