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Finding the Third Proportional to 173.55 and 257.71

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Solution

The third proportional to 173.55 and 257.71 is: 382.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.55 : 257.71 = 257.71 : x
  2. Step 2: Convert to fraction form
    173.55/257.71 = 257.71/x
  3. Step 3: Cross multiply
    173.55x = 257.71 × 257.71
  4. Step 4: Simplify right side
    173.55x = 66,415.93
  5. Step 5: Solve for x
    x = 66,415.93/173.55
  6. Step 6: Final answer
    x = 382.69

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.