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Finding the Third Proportional to 330.75 and 468.25

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Solution

The third proportional to 330.75 and 468.25 is: 662.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.75 : 468.25 = 468.25 : x
  2. Step 2: Convert to fraction form
    330.75/468.25 = 468.25/x
  3. Step 3: Cross multiply
    330.75x = 468.25 × 468.25
  4. Step 4: Simplify right side
    330.75x = 219,258.06
  5. Step 5: Solve for x
    x = 219,258.06/330.75
  6. Step 6: Final answer
    x = 662.91

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.