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Finding the Fourth Proportional to 227.76, 341.72 and 83.48

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Solution

The fourth proportional to 227.76, 341.72 and 83.48 is: 125.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.76 : 341.72 = 83.48 : x
  2. Step 2: Convert to fraction form
    227.76/341.72 = 83.48/x
  3. Step 3: Cross multiply
    227.76x = 341.72 × 83.48
  4. Step 4: Simplify right side
    227.76x = 28,526.79
  5. Step 5: Solve for x
    x = 28,526.79/227.76
  6. Step 6: Final answer
    x = 125.25

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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.