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Finding the Third Proportional to 218.81 and 250.03

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Solution

The third proportional to 218.81 and 250.03 is: 285.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    218.81 : 250.03 = 250.03 : x
  2. Step 2: Convert to fraction form
    218.81/250.03 = 250.03/x
  3. Step 3: Cross multiply
    218.81x = 250.03 × 250.03
  4. Step 4: Simplify right side
    218.81x = 62,515.63
  5. Step 5: Solve for x
    x = 62,515.63/218.81
  6. Step 6: Final answer
    x = 285.70

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.