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Finding the Fourth Proportional to 865.56, 1,304.85 and 796.44

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Solution

The fourth proportional to 865.56, 1,304.85 and 796.44 is: 1,200.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.56 : 1,304.85 = 796.44 : x
  2. Step 2: Convert to fraction form
    865.56/1,304.85 = 796.44/x
  3. Step 3: Cross multiply
    865.56x = 1,304.85 × 796.44
  4. Step 4: Simplify right side
    865.56x = 1,039,234.73
  5. Step 5: Solve for x
    x = 1,039,234.73/865.56
  6. Step 6: Final answer
    x = 1,200.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.