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Finding the Third Proportional to 325.90 and 697.99

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Solution

The third proportional to 325.90 and 697.99 is: 1,494.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.90 : 697.99 = 697.99 : x
  2. Step 2: Convert to fraction form
    325.90/697.99 = 697.99/x
  3. Step 3: Cross multiply
    325.90x = 697.99 × 697.99
  4. Step 4: Simplify right side
    325.90x = 487,193.09
  5. Step 5: Solve for x
    x = 487,193.09/325.90
  6. Step 6: Final answer
    x = 1,494.92

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.