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Finding the Fourth Proportional to 227.82, 313.76 and 213.18

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Solution

The fourth proportional to 227.82, 313.76 and 213.18 is: 293.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.82 : 313.76 = 213.18 : x
  2. Step 2: Convert to fraction form
    227.82/313.76 = 213.18/x
  3. Step 3: Cross multiply
    227.82x = 313.76 × 213.18
  4. Step 4: Simplify right side
    227.82x = 66,887.36
  5. Step 5: Solve for x
    x = 66,887.36/227.82
  6. Step 6: Final answer
    x = 293.60

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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.