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Finding the Third Proportional to 120.75 and 152.63

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Solution

The third proportional to 120.75 and 152.63 is: 192.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.75 : 152.63 = 152.63 : x
  2. Step 2: Convert to fraction form
    120.75/152.63 = 152.63/x
  3. Step 3: Cross multiply
    120.75x = 152.63 × 152.63
  4. Step 4: Simplify right side
    120.75x = 23,294.39
  5. Step 5: Solve for x
    x = 23,294.39/120.75
  6. Step 6: Final answer
    x = 192.91

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Why These Related Problems?

These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.