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Finding the Fourth Proportional to 723.26, 998.13 and 408.62

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Solution

The fourth proportional to 723.26, 998.13 and 408.62 is: 563.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.26 : 998.13 = 408.62 : x
  2. Step 2: Convert to fraction form
    723.26/998.13 = 408.62/x
  3. Step 3: Cross multiply
    723.26x = 998.13 × 408.62
  4. Step 4: Simplify right side
    723.26x = 407,855.88
  5. Step 5: Solve for x
    x = 407,855.88/723.26
  6. Step 6: Final answer
    x = 563.91

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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.