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Finding the Third Proportional to 154.75 and 240.25

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Solution

The third proportional to 154.75 and 240.25 is: 372.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    154.75 : 240.25 = 240.25 : x
  2. Step 2: Convert to fraction form
    154.75/240.25 = 240.25/x
  3. Step 3: Cross multiply
    154.75x = 240.25 × 240.25
  4. Step 4: Simplify right side
    154.75x = 57,720.06
  5. Step 5: Solve for x
    x = 57,720.06/154.75
  6. Step 6: Final answer
    x = 372.99

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.