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Finding the Fourth Proportional to 173.21, 259.97 and 92.12

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Solution

The fourth proportional to 173.21, 259.97 and 92.12 is: 138.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.21 : 259.97 = 92.12 : x
  2. Step 2: Convert to fraction form
    173.21/259.97 = 92.12/x
  3. Step 3: Cross multiply
    173.21x = 259.97 × 92.12
  4. Step 4: Simplify right side
    173.21x = 23,946.68
  5. Step 5: Solve for x
    x = 23,946.68/173.21
  6. Step 6: Final answer
    x = 138.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.