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Finding the Third Proportional to 105.36 and 159.47

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Solution

The third proportional to 105.36 and 159.47 is: 241.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    105.36 : 159.47 = 159.47 : x
  2. Step 2: Convert to fraction form
    105.36/159.47 = 159.47/x
  3. Step 3: Cross multiply
    105.36x = 159.47 × 159.47
  4. Step 4: Simplify right side
    105.36x = 25,430.28
  5. Step 5: Solve for x
    x = 25,430.28/105.36
  6. Step 6: Final answer
    x = 241.36

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.