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Finding the Third Proportional to 553.78 and 1,205.16

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Solution

The third proportional to 553.78 and 1,205.16 is: 2,622.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.78 : 1,205.16 = 1,205.16 : x
  2. Step 2: Convert to fraction form
    553.78/1,205.16 = 1,205.16/x
  3. Step 3: Cross multiply
    553.78x = 1,205.16 × 1,205.16
  4. Step 4: Simplify right side
    553.78x = 1,452,401.59
  5. Step 5: Solve for x
    x = 1,452,401.59/553.78
  6. Step 6: Final answer
    x = 2,622.70

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.