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Finding the Fourth Proportional to 1,096.39, 1,644.78 and 519.25

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Solution

The fourth proportional to 1,096.39, 1,644.78 and 519.25 is: 778.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,096.39 : 1,644.78 = 519.25 : x
  2. Step 2: Convert to fraction form
    1,096.39/1,644.78 = 519.25/x
  3. Step 3: Cross multiply
    1,096.39x = 1,644.78 × 519.25
  4. Step 4: Simplify right side
    1,096.39x = 854,052.02
  5. Step 5: Solve for x
    x = 854,052.02/1,096.39
  6. Step 6: Final answer
    x = 778.97

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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.