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Finding the Third Proportional to 116 and 218.25

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Solution

The third proportional to 116 and 218.25 is: 410.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    116 : 218.25 = 218.25 : x
  2. Step 2: Convert to fraction form
    116/218.25 = 218.25/x
  3. Step 3: Cross multiply
    116x = 218.25 × 218.25
  4. Step 4: Simplify right side
    116x = 47,633.06
  5. Step 5: Solve for x
    x = 47,633.06/116
  6. Step 6: Final answer
    x = 410.63

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.