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Finding the Fourth Proportional to 664.12, 994.60 and 568

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Solution

The fourth proportional to 664.12, 994.60 and 568 is: 850.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    664.12 : 994.60 = 568 : x
  2. Step 2: Convert to fraction form
    664.12/994.60 = 568/x
  3. Step 3: Cross multiply
    664.12x = 994.60 × 568
  4. Step 4: Simplify right side
    664.12x = 564,932.80
  5. Step 5: Solve for x
    x = 564,932.80/664.12
  6. Step 6: Final answer
    x = 850.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.