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Finding the Third Proportional to 132.75 and 289.69

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Solution

The third proportional to 132.75 and 289.69 is: 632.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.75 : 289.69 = 289.69 : x
  2. Step 2: Convert to fraction form
    132.75/289.69 = 289.69/x
  3. Step 3: Cross multiply
    132.75x = 289.69 × 289.69
  4. Step 4: Simplify right side
    132.75x = 83,918.85
  5. Step 5: Solve for x
    x = 83,918.85/132.75
  6. Step 6: Final answer
    x = 632.16

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.