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Finding the Third Proportional to 189 and 500

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Solution

The third proportional to 189 and 500 is: 1,322.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    189 : 500 = 500 : x
  2. Step 2: Convert to fraction form
    189/500 = 500/x
  3. Step 3: Cross multiply
    189x = 500 × 500
  4. Step 4: Simplify right side
    189x = 250,000
  5. Step 5: Solve for x
    x = 250,000/189
  6. Step 6: Final answer
    x = 1,322.75

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Why These Related Problems?

These problems maintain the same ratio (2.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.