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Finding the Fourth Proportional to 722, 996.33 and 460

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Solution

The fourth proportional to 722, 996.33 and 460 is: 634.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    722 : 996.33 = 460 : x
  2. Step 2: Convert to fraction form
    722/996.33 = 460/x
  3. Step 3: Cross multiply
    722x = 996.33 × 460
  4. Step 4: Simplify right side
    722x = 458,311.80
  5. Step 5: Solve for x
    x = 458,311.80/722
  6. Step 6: Final answer
    x = 634.78

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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.