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Finding the Third Proportional to 68.06 and 99.84

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Solution

The third proportional to 68.06 and 99.84 is: 146.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.06 : 99.84 = 99.84 : x
  2. Step 2: Convert to fraction form
    68.06/99.84 = 99.84/x
  3. Step 3: Cross multiply
    68.06x = 99.84 × 99.84
  4. Step 4: Simplify right side
    68.06x = 9,968.77
  5. Step 5: Solve for x
    x = 9,968.77/68.06
  6. Step 6: Final answer
    x = 146.47

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.