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Finding the Third Proportional to 73.31 and 120

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Solution

The third proportional to 73.31 and 120 is: 196.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    73.31 : 120 = 120 : x
  2. Step 2: Convert to fraction form
    73.31/120 = 120/x
  3. Step 3: Cross multiply
    73.31x = 120 × 120
  4. Step 4: Simplify right side
    73.31x = 14,400
  5. Step 5: Solve for x
    x = 14,400/73.31
  6. Step 6: Final answer
    x = 196.42

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.