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Finding the Fourth Proportional to 694.32, 958.14 and 379.56

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Solution

The fourth proportional to 694.32, 958.14 and 379.56 is: 523.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.32 : 958.14 = 379.56 : x
  2. Step 2: Convert to fraction form
    694.32/958.14 = 379.56/x
  3. Step 3: Cross multiply
    694.32x = 958.14 × 379.56
  4. Step 4: Simplify right side
    694.32x = 363,671.62
  5. Step 5: Solve for x
    x = 363,671.62/694.32
  6. Step 6: Final answer
    x = 523.78

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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.