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Finding the Fourth Proportional to 227.40, 313.81 and 134.15

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Solution

The fourth proportional to 227.40, 313.81 and 134.15 is: 185.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.40 : 313.81 = 134.15 : x
  2. Step 2: Convert to fraction form
    227.40/313.81 = 134.15/x
  3. Step 3: Cross multiply
    227.40x = 313.81 × 134.15
  4. Step 4: Simplify right side
    227.40x = 42,097.61
  5. Step 5: Solve for x
    x = 42,097.61/227.40
  6. Step 6: Final answer
    x = 185.13

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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.