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Finding the Fourth Proportional to 694.39, 958.23 and 383.89

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Solution

The fourth proportional to 694.39, 958.23 and 383.89 is: 529.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.39 : 958.23 = 383.89 : x
  2. Step 2: Convert to fraction form
    694.39/958.23 = 383.89/x
  3. Step 3: Cross multiply
    694.39x = 958.23 × 383.89
  4. Step 4: Simplify right side
    694.39x = 367,854.91
  5. Step 5: Solve for x
    x = 367,854.91/694.39
  6. Step 6: Final answer
    x = 529.75

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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.