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Finding the Fourth Proportional to 717.98, 989.60 and 599.49

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Solution

The fourth proportional to 717.98, 989.60 and 599.49 is: 826.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.98 : 989.60 = 599.49 : x
  2. Step 2: Convert to fraction form
    717.98/989.60 = 599.49/x
  3. Step 3: Cross multiply
    717.98x = 989.60 × 599.49
  4. Step 4: Simplify right side
    717.98x = 593,252.31
  5. Step 5: Solve for x
    x = 593,252.31/717.98
  6. Step 6: Final answer
    x = 826.29

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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.