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Finding the Fourth Proportional to 342.76, 472.75 and 226.12

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Solution

The fourth proportional to 342.76, 472.75 and 226.12 is: 311.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.76 : 472.75 = 226.12 : x
  2. Step 2: Convert to fraction form
    342.76/472.75 = 226.12/x
  3. Step 3: Cross multiply
    342.76x = 472.75 × 226.12
  4. Step 4: Simplify right side
    342.76x = 106,898.23
  5. Step 5: Solve for x
    x = 106,898.23/342.76
  6. Step 6: Final answer
    x = 311.87

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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.