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Finding the Fourth Proportional to 171.62, 236.81 and 134.76

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Solution

The fourth proportional to 171.62, 236.81 and 134.76 is: 185.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    171.62 : 236.81 = 134.76 : x
  2. Step 2: Convert to fraction form
    171.62/236.81 = 134.76/x
  3. Step 3: Cross multiply
    171.62x = 236.81 × 134.76
  4. Step 4: Simplify right side
    171.62x = 31,911.84
  5. Step 5: Solve for x
    x = 31,911.84/171.62
  6. Step 6: Final answer
    x = 185.95

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.