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Finding the Fourth Proportional to 844.33, 1,264.26 and 660.86

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Solution

The fourth proportional to 844.33, 1,264.26 and 660.86 is: 989.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    844.33 : 1,264.26 = 660.86 : x
  2. Step 2: Convert to fraction form
    844.33/1,264.26 = 660.86/x
  3. Step 3: Cross multiply
    844.33x = 1,264.26 × 660.86
  4. Step 4: Simplify right side
    844.33x = 835,498.86
  5. Step 5: Solve for x
    x = 835,498.86/844.33
  6. Step 6: Final answer
    x = 989.54

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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.