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Finding the Third Proportional to 345.25 and 744.25

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Solution

The third proportional to 345.25 and 744.25 is: 1,604.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.25 : 744.25 = 744.25 : x
  2. Step 2: Convert to fraction form
    345.25/744.25 = 744.25/x
  3. Step 3: Cross multiply
    345.25x = 744.25 × 744.25
  4. Step 4: Simplify right side
    345.25x = 553,908.06
  5. Step 5: Solve for x
    x = 553,908.06/345.25
  6. Step 6: Final answer
    x = 1,604.37

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.