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Finding the Fourth Proportional to 884.90, 1,327.82 and 679.83

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Solution

The fourth proportional to 884.90, 1,327.82 and 679.83 is: 1,020.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.90 : 1,327.82 = 679.83 : x
  2. Step 2: Convert to fraction form
    884.90/1,327.82 = 679.83/x
  3. Step 3: Cross multiply
    884.90x = 1,327.82 × 679.83
  4. Step 4: Simplify right side
    884.90x = 902,688.47
  5. Step 5: Solve for x
    x = 902,688.47/884.90
  6. Step 6: Final answer
    x = 1,020.11

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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.