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Finding the Fourth Proportional to 844.22, 1,266.89 and 635.55

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Solution

The fourth proportional to 844.22, 1,266.89 and 635.55 is: 953.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.22 : 1,266.89 = 635.55 : x
  2. Step 2: Convert to fraction form
    844.22/1,266.89 = 635.55/x
  3. Step 3: Cross multiply
    844.22x = 1,266.89 × 635.55
  4. Step 4: Simplify right side
    844.22x = 805,167.59
  5. Step 5: Solve for x
    x = 805,167.59/844.22
  6. Step 6: Final answer
    x = 953.74

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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.