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Finding the Third Proportional to 15.75 and 22.22

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Solution

The third proportional to 15.75 and 22.22 is: 31.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15.75 : 22.22 = 22.22 : x
  2. Step 2: Convert to fraction form
    15.75/22.22 = 22.22/x
  3. Step 3: Cross multiply
    15.75x = 22.22 × 22.22
  4. Step 4: Simplify right side
    15.75x = 493.67
  5. Step 5: Solve for x
    x = 493.67/15.75
  6. Step 6: Final answer
    x = 31.34

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.