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Finding the Third Proportional to 266.39 and 581.20

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Solution

The third proportional to 266.39 and 581.20 is: 1,268.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.39 : 581.20 = 581.20 : x
  2. Step 2: Convert to fraction form
    266.39/581.20 = 581.20/x
  3. Step 3: Cross multiply
    266.39x = 581.20 × 581.20
  4. Step 4: Simplify right side
    266.39x = 337,797.07
  5. Step 5: Solve for x
    x = 337,797.07/266.39
  6. Step 6: Final answer
    x = 1,268.05

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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.