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Finding the Fourth Proportional to 884.97, 1,326.02 and 641.66

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Solution

The fourth proportional to 884.97, 1,326.02 and 641.66 is: 961.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.97 : 1,326.02 = 641.66 : x
  2. Step 2: Convert to fraction form
    884.97/1,326.02 = 641.66/x
  3. Step 3: Cross multiply
    884.97x = 1,326.02 × 641.66
  4. Step 4: Simplify right side
    884.97x = 850,844.15
  5. Step 5: Solve for x
    x = 850,844.15/884.97
  6. Step 6: Final answer
    x = 961.44

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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.