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Finding the Fourth Proportional to 996.28, 1,375.01 and 576.63

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Solution

The fourth proportional to 996.28, 1,375.01 and 576.63 is: 795.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    996.28 : 1,375.01 = 576.63 : x
  2. Step 2: Convert to fraction form
    996.28/1,375.01 = 576.63/x
  3. Step 3: Cross multiply
    996.28x = 1,375.01 × 576.63
  4. Step 4: Simplify right side
    996.28x = 792,872.02
  5. Step 5: Solve for x
    x = 792,872.02/996.28
  6. Step 6: Final answer
    x = 795.83

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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.