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Finding the Fourth Proportional to 227.46, 340.56 and 172.30

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Solution

The fourth proportional to 227.46, 340.56 and 172.30 is: 257.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.46 : 340.56 = 172.30 : x
  2. Step 2: Convert to fraction form
    227.46/340.56 = 172.30/x
  3. Step 3: Cross multiply
    227.46x = 340.56 × 172.30
  4. Step 4: Simplify right side
    227.46x = 58,678.49
  5. Step 5: Solve for x
    x = 58,678.49/227.46
  6. Step 6: Final answer
    x = 257.97

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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.