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Finding the Third Proportional to 291.09 and 444.23

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Solution

The third proportional to 291.09 and 444.23 is: 677.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    291.09 : 444.23 = 444.23 : x
  2. Step 2: Convert to fraction form
    291.09/444.23 = 444.23/x
  3. Step 3: Cross multiply
    291.09x = 444.23 × 444.23
  4. Step 4: Simplify right side
    291.09x = 197,344.18
  5. Step 5: Solve for x
    x = 197,344.18/291.09
  6. Step 6: Final answer
    x = 677.94

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.