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Finding the Third Proportional to 558.98 and 1,212.05

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Solution

The third proportional to 558.98 and 1,212.05 is: 2,628.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.98 : 1,212.05 = 1,212.05 : x
  2. Step 2: Convert to fraction form
    558.98/1,212.05 = 1,212.05/x
  3. Step 3: Cross multiply
    558.98x = 1,212.05 × 1,212.05
  4. Step 4: Simplify right side
    558.98x = 1,469,057.63
  5. Step 5: Solve for x
    x = 1,469,057.63/558.98
  6. Step 6: Final answer
    x = 2,628.08

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.