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Finding the Fourth Proportional to 227.74, 341.48 and 90.68

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Solution

The fourth proportional to 227.74, 341.48 and 90.68 is: 135.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.74 : 341.48 = 90.68 : x
  2. Step 2: Convert to fraction form
    227.74/341.48 = 90.68/x
  3. Step 3: Cross multiply
    227.74x = 341.48 × 90.68
  4. Step 4: Simplify right side
    227.74x = 30,965.41
  5. Step 5: Solve for x
    x = 30,965.41/227.74
  6. Step 6: Final answer
    x = 135.97

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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.