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Finding the Fourth Proportional to 999.31, 1,500.03 and 884.49

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Solution

The fourth proportional to 999.31, 1,500.03 and 884.49 is: 1,327.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.31 : 1,500.03 = 884.49 : x
  2. Step 2: Convert to fraction form
    999.31/1,500.03 = 884.49/x
  3. Step 3: Cross multiply
    999.31x = 1,500.03 × 884.49
  4. Step 4: Simplify right side
    999.31x = 1,326,761.53
  5. Step 5: Solve for x
    x = 1,326,761.53/999.31
  6. Step 6: Final answer
    x = 1,327.68

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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.