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Finding the Fourth Proportional to 721.51, 996.10 and 441.86

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Solution

The fourth proportional to 721.51, 996.10 and 441.86 is: 610.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    721.51 : 996.10 = 441.86 : x
  2. Step 2: Convert to fraction form
    721.51/996.10 = 441.86/x
  3. Step 3: Cross multiply
    721.51x = 996.10 × 441.86
  4. Step 4: Simplify right side
    721.51x = 440,130.66
  5. Step 5: Solve for x
    x = 440,130.66/721.51
  6. Step 6: Final answer
    x = 610.02

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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.