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Finding the Third Proportional to 53.44 and 139.92

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Solution

The third proportional to 53.44 and 139.92 is: 366.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.44 : 139.92 = 139.92 : x
  2. Step 2: Convert to fraction form
    53.44/139.92 = 139.92/x
  3. Step 3: Cross multiply
    53.44x = 139.92 × 139.92
  4. Step 4: Simplify right side
    53.44x = 19,578.13
  5. Step 5: Solve for x
    x = 19,578.13/53.44
  6. Step 6: Final answer
    x = 366.37

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Why These Related Problems?

These problems maintain the same ratio (2.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.