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Finding the Fourth Proportional to 799.44, 1,102.60 and 519.74

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Solution

The fourth proportional to 799.44, 1,102.60 and 519.74 is: 716.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.44 : 1,102.60 = 519.74 : x
  2. Step 2: Convert to fraction form
    799.44/1,102.60 = 519.74/x
  3. Step 3: Cross multiply
    799.44x = 1,102.60 × 519.74
  4. Step 4: Simplify right side
    799.44x = 573,065.32
  5. Step 5: Solve for x
    x = 573,065.32/799.44
  6. Step 6: Final answer
    x = 716.83

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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.