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Finding the Fourth Proportional to 701.83, 968.62 and 422.21

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Solution

The fourth proportional to 701.83, 968.62 and 422.21 is: 582.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.83 : 968.62 = 422.21 : x
  2. Step 2: Convert to fraction form
    701.83/968.62 = 422.21/x
  3. Step 3: Cross multiply
    701.83x = 968.62 × 422.21
  4. Step 4: Simplify right side
    701.83x = 408,961.05
  5. Step 5: Solve for x
    x = 408,961.05/701.83
  6. Step 6: Final answer
    x = 582.71

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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.