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Finding the Fourth Proportional to 300.66, 415.07 and 227.16

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Solution

The fourth proportional to 300.66, 415.07 and 227.16 is: 313.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.66 : 415.07 = 227.16 : x
  2. Step 2: Convert to fraction form
    300.66/415.07 = 227.16/x
  3. Step 3: Cross multiply
    300.66x = 415.07 × 227.16
  4. Step 4: Simplify right side
    300.66x = 94,286.17
  5. Step 5: Solve for x
    x = 94,286.17/300.66
  6. Step 6: Final answer
    x = 313.60

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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.