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Finding the Fourth Proportional to 694.80, 958.73 and 396.08

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Solution

The fourth proportional to 694.80, 958.73 and 396.08 is: 546.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.80 : 958.73 = 396.08 : x
  2. Step 2: Convert to fraction form
    694.80/958.73 = 396.08/x
  3. Step 3: Cross multiply
    694.80x = 958.73 × 396.08
  4. Step 4: Simplify right side
    694.80x = 379,733.78
  5. Step 5: Solve for x
    x = 379,733.78/694.80
  6. Step 6: Final answer
    x = 546.54

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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.