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Finding the Fourth Proportional to 721.22, 995.23 and 441.54

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Solution

The fourth proportional to 721.22, 995.23 and 441.54 is: 609.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    721.22 : 995.23 = 441.54 : x
  2. Step 2: Convert to fraction form
    721.22/995.23 = 441.54/x
  3. Step 3: Cross multiply
    721.22x = 995.23 × 441.54
  4. Step 4: Simplify right side
    721.22x = 439,433.85
  5. Step 5: Solve for x
    x = 439,433.85/721.22
  6. Step 6: Final answer
    x = 609.29

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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.