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Finding the Fourth Proportional to 268.44, 370.55 and 227.20

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Solution

The fourth proportional to 268.44, 370.55 and 227.20 is: 313.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.44 : 370.55 = 227.20 : x
  2. Step 2: Convert to fraction form
    268.44/370.55 = 227.20/x
  3. Step 3: Cross multiply
    268.44x = 370.55 × 227.20
  4. Step 4: Simplify right side
    268.44x = 84,187.82
  5. Step 5: Solve for x
    x = 84,187.82/268.44
  6. Step 6: Final answer
    x = 313.62

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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.