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Finding the Fourth Proportional to 694.38, 958.30 and 414.70

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Solution

The fourth proportional to 694.38, 958.30 and 414.70 is: 572.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    694.38 : 958.30 = 414.70 : x
  2. Step 2: Convert to fraction form
    694.38/958.30 = 414.70/x
  3. Step 3: Cross multiply
    694.38x = 958.30 × 414.70
  4. Step 4: Simplify right side
    694.38x = 397,407.01
  5. Step 5: Solve for x
    x = 397,407.01/694.38
  6. Step 6: Final answer
    x = 572.32

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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.