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Finding the Third Proportional to 172 and 264

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Solution

The third proportional to 172 and 264 is: 405.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    172 : 264 = 264 : x
  2. Step 2: Convert to fraction form
    172/264 = 264/x
  3. Step 3: Cross multiply
    172x = 264 × 264
  4. Step 4: Simplify right side
    172x = 69,696
  5. Step 5: Solve for x
    x = 69,696/172
  6. Step 6: Final answer
    x = 405.21

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.