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Finding the Third Proportional to 133.50 and 289.63

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Solution

The third proportional to 133.50 and 289.63 is: 628.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.50 : 289.63 = 289.63 : x
  2. Step 2: Convert to fraction form
    133.50/289.63 = 289.63/x
  3. Step 3: Cross multiply
    133.50x = 289.63 × 289.63
  4. Step 4: Simplify right side
    133.50x = 83,882.64
  5. Step 5: Solve for x
    x = 83,882.64/133.50
  6. Step 6: Final answer
    x = 628.33

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.