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Finding the Third Proportional to 117.56 and 195.28

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Solution

The third proportional to 117.56 and 195.28 is: 324.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.56 : 195.28 = 195.28 : x
  2. Step 2: Convert to fraction form
    117.56/195.28 = 195.28/x
  3. Step 3: Cross multiply
    117.56x = 195.28 × 195.28
  4. Step 4: Simplify right side
    117.56x = 38,134.77
  5. Step 5: Solve for x
    x = 38,134.77/117.56
  6. Step 6: Final answer
    x = 324.38

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.