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Finding the Fourth Proportional to 884.67, 1,219.82 and 635.86

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Solution

The fourth proportional to 884.67, 1,219.82 and 635.86 is: 876.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.67 : 1,219.82 = 635.86 : x
  2. Step 2: Convert to fraction form
    884.67/1,219.82 = 635.86/x
  3. Step 3: Cross multiply
    884.67x = 1,219.82 × 635.86
  4. Step 4: Simplify right side
    884.67x = 775,634.75
  5. Step 5: Solve for x
    x = 775,634.75/884.67
  6. Step 6: Final answer
    x = 876.75

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.