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Finding the Fourth Proportional to 227.45, 341.05 and 99.13

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Solution

The fourth proportional to 227.45, 341.05 and 99.13 is: 148.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.45 : 341.05 = 99.13 : x
  2. Step 2: Convert to fraction form
    227.45/341.05 = 99.13/x
  3. Step 3: Cross multiply
    227.45x = 341.05 × 99.13
  4. Step 4: Simplify right side
    227.45x = 33,806.33
  5. Step 5: Solve for x
    x = 33,806.33/227.45
  6. Step 6: Final answer
    x = 148.64

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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.