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Finding the Fourth Proportional to 226.33, 312.45 and 171.30

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Solution

The fourth proportional to 226.33, 312.45 and 171.30 is: 236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.33 : 312.45 = 171.30 : x
  2. Step 2: Convert to fraction form
    226.33/312.45 = 171.30/x
  3. Step 3: Cross multiply
    226.33x = 312.45 × 171.30
  4. Step 4: Simplify right side
    226.33x = 53,522.69
  5. Step 5: Solve for x
    x = 53,522.69/226.33
  6. Step 6: Final answer
    x = 236.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.