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Finding the Fourth Proportional to 799.03, 1,198.91 and 388.54

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Solution

The fourth proportional to 799.03, 1,198.91 and 388.54 is: 582.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.03 : 1,198.91 = 388.54 : x
  2. Step 2: Convert to fraction form
    799.03/1,198.91 = 388.54/x
  3. Step 3: Cross multiply
    799.03x = 1,198.91 × 388.54
  4. Step 4: Simplify right side
    799.03x = 465,824.49
  5. Step 5: Solve for x
    x = 465,824.49/799.03
  6. Step 6: Final answer
    x = 582.99

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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.