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Finding the Third Proportional to 71.19 and 159.47

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Solution

The third proportional to 71.19 and 159.47 is: 357.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    71.19 : 159.47 = 159.47 : x
  2. Step 2: Convert to fraction form
    71.19/159.47 = 159.47/x
  3. Step 3: Cross multiply
    71.19x = 159.47 × 159.47
  4. Step 4: Simplify right side
    71.19x = 25,430.28
  5. Step 5: Solve for x
    x = 25,430.28/71.19
  6. Step 6: Final answer
    x = 357.21

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Why These Related Problems?

These problems maintain the same ratio (2.24) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.