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Finding the Fourth Proportional to 227.44, 341.40 and 99.28

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Solution

The fourth proportional to 227.44, 341.40 and 99.28 is: 149.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.44 : 341.40 = 99.28 : x
  2. Step 2: Convert to fraction form
    227.44/341.40 = 99.28/x
  3. Step 3: Cross multiply
    227.44x = 341.40 × 99.28
  4. Step 4: Simplify right side
    227.44x = 33,894.19
  5. Step 5: Solve for x
    x = 33,894.19/227.44
  6. Step 6: Final answer
    x = 149.02

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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.