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Finding the Fourth Proportional to 694.71, 958.70 and 396.02

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Solution

The fourth proportional to 694.71, 958.70 and 396.02 is: 546.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.71 : 958.70 = 396.02 : x
  2. Step 2: Convert to fraction form
    694.71/958.70 = 396.02/x
  3. Step 3: Cross multiply
    694.71x = 958.70 × 396.02
  4. Step 4: Simplify right side
    694.71x = 379,667.76
  5. Step 5: Solve for x
    x = 379,667.76/694.71
  6. Step 6: Final answer
    x = 546.51

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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.