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Finding the Third Proportional to 272.53 and 581.45

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Solution

The third proportional to 272.53 and 581.45 is: 1,240.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.53 : 581.45 = 581.45 : x
  2. Step 2: Convert to fraction form
    272.53/581.45 = 581.45/x
  3. Step 3: Cross multiply
    272.53x = 581.45 × 581.45
  4. Step 4: Simplify right side
    272.53x = 338,083.19
  5. Step 5: Solve for x
    x = 338,083.19/272.53
  6. Step 6: Final answer
    x = 1,240.53

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.