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Finding the Third Proportional to 778.63 and 1,190.44

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Solution

The third proportional to 778.63 and 1,190.44 is: 1,820.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    778.63 : 1,190.44 = 1,190.44 : x
  2. Step 2: Convert to fraction form
    778.63/1,190.44 = 1,190.44/x
  3. Step 3: Cross multiply
    778.63x = 1,190.44 × 1,190.44
  4. Step 4: Simplify right side
    778.63x = 1,417,141.44
  5. Step 5: Solve for x
    x = 1,417,141.44/778.63
  6. Step 6: Final answer
    x = 1,820.06

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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.