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Finding the Third Proportional to 3.21 and 6.93

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Solution

The third proportional to 3.21 and 6.93 is: 14.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3.21 : 6.93 = 6.93 : x
  2. Step 2: Convert to fraction form
    3.21/6.93 = 6.93/x
  3. Step 3: Cross multiply
    3.21x = 6.93 × 6.93
  4. Step 4: Simplify right side
    3.21x = 47.98
  5. Step 5: Solve for x
    x = 47.98/3.21
  6. Step 6: Final answer
    x = 14.95

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.