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Finding the Fourth Proportional to 578.97, 799.42 and 379.87

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Solution

The fourth proportional to 578.97, 799.42 and 379.87 is: 524.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    578.97 : 799.42 = 379.87 : x
  2. Step 2: Convert to fraction form
    578.97/799.42 = 379.87/x
  3. Step 3: Cross multiply
    578.97x = 799.42 × 379.87
  4. Step 4: Simplify right side
    578.97x = 303,675.68
  5. Step 5: Solve for x
    x = 303,675.68/578.97
  6. Step 6: Final answer
    x = 524.51

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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.