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Finding the Fourth Proportional to 721.65, 996.26 and 544.41

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Solution

The fourth proportional to 721.65, 996.26 and 544.41 is: 751.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    721.65 : 996.26 = 544.41 : x
  2. Step 2: Convert to fraction form
    721.65/996.26 = 544.41/x
  3. Step 3: Cross multiply
    721.65x = 996.26 × 544.41
  4. Step 4: Simplify right side
    721.65x = 542,373.91
  5. Step 5: Solve for x
    x = 542,373.91/721.65
  6. Step 6: Final answer
    x = 751.57

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.