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Finding the Fourth Proportional to 724.89, 997.34 and 626.48

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Solution

The fourth proportional to 724.89, 997.34 and 626.48 is: 861.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    724.89 : 997.34 = 626.48 : x
  2. Step 2: Convert to fraction form
    724.89/997.34 = 626.48/x
  3. Step 3: Cross multiply
    724.89x = 997.34 × 626.48
  4. Step 4: Simplify right side
    724.89x = 624,805.44
  5. Step 5: Solve for x
    x = 624,805.44/724.89
  6. Step 6: Final answer
    x = 861.93

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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.