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Finding the Fourth Proportional to 717.90, 997.37 and 709.26

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Solution

The fourth proportional to 717.90, 997.37 and 709.26 is: 985.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.90 : 997.37 = 709.26 : x
  2. Step 2: Convert to fraction form
    717.90/997.37 = 709.26/x
  3. Step 3: Cross multiply
    717.90x = 997.37 × 709.26
  4. Step 4: Simplify right side
    717.90x = 707,394.65
  5. Step 5: Solve for x
    x = 707,394.65/717.90
  6. Step 6: Final answer
    x = 985.37

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.