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Finding the Fourth Proportional to 173.84, 260.73 and 81.29

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Solution

The fourth proportional to 173.84, 260.73 and 81.29 is: 121.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    173.84 : 260.73 = 81.29 : x
  2. Step 2: Convert to fraction form
    173.84/260.73 = 81.29/x
  3. Step 3: Cross multiply
    173.84x = 260.73 × 81.29
  4. Step 4: Simplify right side
    173.84x = 21,194.74
  5. Step 5: Solve for x
    x = 21,194.74/173.84
  6. Step 6: Final answer
    x = 121.92

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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.