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Finding the Fourth Proportional to 694.61, 958.24 and 428.83

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Solution

The fourth proportional to 694.61, 958.24 and 428.83 is: 591.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.61 : 958.24 = 428.83 : x
  2. Step 2: Convert to fraction form
    694.61/958.24 = 428.83/x
  3. Step 3: Cross multiply
    694.61x = 958.24 × 428.83
  4. Step 4: Simplify right side
    694.61x = 410,922.06
  5. Step 5: Solve for x
    x = 410,922.06/694.61
  6. Step 6: Final answer
    x = 591.59

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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.