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Finding the Fourth Proportional to 723.67, 996.25 and 690.61

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Solution

The fourth proportional to 723.67, 996.25 and 690.61 is: 950.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    723.67 : 996.25 = 690.61 : x
  2. Step 2: Convert to fraction form
    723.67/996.25 = 690.61/x
  3. Step 3: Cross multiply
    723.67x = 996.25 × 690.61
  4. Step 4: Simplify right side
    723.67x = 688,014.27
  5. Step 5: Solve for x
    x = 688,014.27/723.67
  6. Step 6: Final answer
    x = 950.73

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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.