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Finding the Fourth Proportional to 884.94, 1,327.41 and 422.76

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Solution

The fourth proportional to 884.94, 1,327.41 and 422.76 is: 634.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.94 : 1,327.41 = 422.76 : x
  2. Step 2: Convert to fraction form
    884.94/1,327.41 = 422.76/x
  3. Step 3: Cross multiply
    884.94x = 1,327.41 × 422.76
  4. Step 4: Simplify right side
    884.94x = 561,175.85
  5. Step 5: Solve for x
    x = 561,175.85/884.94
  6. Step 6: Final answer
    x = 634.14

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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.