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Finding the Third Proportional to 906.75 and 1,205.72

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Solution

The third proportional to 906.75 and 1,205.72 is: 1,603.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    906.75 : 1,205.72 = 1,205.72 : x
  2. Step 2: Convert to fraction form
    906.75/1,205.72 = 1,205.72/x
  3. Step 3: Cross multiply
    906.75x = 1,205.72 × 1,205.72
  4. Step 4: Simplify right side
    906.75x = 1,453,757.70
  5. Step 5: Solve for x
    x = 1,453,757.70/906.75
  6. Step 6: Final answer
    x = 1,603.26

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.