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Finding the Third Proportional to 216.75 and 367.88

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Solution

The third proportional to 216.75 and 367.88 is: 624.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    216.75 : 367.88 = 367.88 : x
  2. Step 2: Convert to fraction form
    216.75/367.88 = 367.88/x
  3. Step 3: Cross multiply
    216.75x = 367.88 × 367.88
  4. Step 4: Simplify right side
    216.75x = 135,332.02
  5. Step 5: Solve for x
    x = 135,332.02/216.75
  6. Step 6: Final answer
    x = 624.37

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.