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Finding the Fourth Proportional to 694.39, 958.24 and 379.64

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Solution

The fourth proportional to 694.39, 958.24 and 379.64 is: 523.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.39 : 958.24 = 379.64 : x
  2. Step 2: Convert to fraction form
    694.39/958.24 = 379.64/x
  3. Step 3: Cross multiply
    694.39x = 958.24 × 379.64
  4. Step 4: Simplify right side
    694.39x = 363,786.23
  5. Step 5: Solve for x
    x = 363,786.23/694.39
  6. Step 6: Final answer
    x = 523.89

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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.