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Finding the Third Proportional to 272.25 and 455.06

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Solution

The third proportional to 272.25 and 455.06 is: 760.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.25 : 455.06 = 455.06 : x
  2. Step 2: Convert to fraction form
    272.25/455.06 = 455.06/x
  3. Step 3: Cross multiply
    272.25x = 455.06 × 455.06
  4. Step 4: Simplify right side
    272.25x = 207,081.88
  5. Step 5: Solve for x
    x = 207,081.88/272.25
  6. Step 6: Final answer
    x = 760.63

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Why These Related Problems?

These problems maintain the same ratio (1.67) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.