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Finding the Fourth Proportional to 227.80, 341.61 and 90.91

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Solution

The fourth proportional to 227.80, 341.61 and 90.91 is: 136.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.80 : 341.61 = 90.91 : x
  2. Step 2: Convert to fraction form
    227.80/341.61 = 90.91/x
  3. Step 3: Cross multiply
    227.80x = 341.61 × 90.91
  4. Step 4: Simplify right side
    227.80x = 31,055.77
  5. Step 5: Solve for x
    x = 31,055.77/227.80
  6. Step 6: Final answer
    x = 136.33

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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.