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Finding the Third Proportional to 288.88 and 446.06

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Solution

The third proportional to 288.88 and 446.06 is: 688.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.88 : 446.06 = 446.06 : x
  2. Step 2: Convert to fraction form
    288.88/446.06 = 446.06/x
  3. Step 3: Cross multiply
    288.88x = 446.06 × 446.06
  4. Step 4: Simplify right side
    288.88x = 198,971.75
  5. Step 5: Solve for x
    x = 198,971.75/288.88
  6. Step 6: Final answer
    x = 688.78

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.