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Finding the Fourth Proportional to 884.80, 1,327.92 and 474.22

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Solution

The fourth proportional to 884.80, 1,327.92 and 474.22 is: 711.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.80 : 1,327.92 = 474.22 : x
  2. Step 2: Convert to fraction form
    884.80/1,327.92 = 474.22/x
  3. Step 3: Cross multiply
    884.80x = 1,327.92 × 474.22
  4. Step 4: Simplify right side
    884.80x = 629,726.22
  5. Step 5: Solve for x
    x = 629,726.22/884.80
  6. Step 6: Final answer
    x = 711.72

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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.