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Finding the Fourth Proportional to 227.81, 341.21 and 136.28

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Solution

The fourth proportional to 227.81, 341.21 and 136.28 is: 204.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.81 : 341.21 = 136.28 : x
  2. Step 2: Convert to fraction form
    227.81/341.21 = 136.28/x
  3. Step 3: Cross multiply
    227.81x = 341.21 × 136.28
  4. Step 4: Simplify right side
    227.81x = 46,501.29
  5. Step 5: Solve for x
    x = 46,501.29/227.81
  6. Step 6: Final answer
    x = 204.12

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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.