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Finding the Third Proportional to 345.09 and 744.19

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Solution

The third proportional to 345.09 and 744.19 is: 1,604.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.09 : 744.19 = 744.19 : x
  2. Step 2: Convert to fraction form
    345.09/744.19 = 744.19/x
  3. Step 3: Cross multiply
    345.09x = 744.19 × 744.19
  4. Step 4: Simplify right side
    345.09x = 553,815.04
  5. Step 5: Solve for x
    x = 553,815.04/345.09
  6. Step 6: Final answer
    x = 1,604.82

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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.