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Finding the Third Proportional to 261.25 and 404.44

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Solution

The third proportional to 261.25 and 404.44 is: 626.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    261.25 : 404.44 = 404.44 : x
  2. Step 2: Convert to fraction form
    261.25/404.44 = 404.44/x
  3. Step 3: Cross multiply
    261.25x = 404.44 × 404.44
  4. Step 4: Simplify right side
    261.25x = 163,569.69
  5. Step 5: Solve for x
    x = 163,569.69/261.25
  6. Step 6: Final answer
    x = 626.10

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.