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Finding the Fourth Proportional to 227.77, 314.21 and 149.09

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Solution

The fourth proportional to 227.77, 314.21 and 149.09 is: 205.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.77 : 314.21 = 149.09 : x
  2. Step 2: Convert to fraction form
    227.77/314.21 = 149.09/x
  3. Step 3: Cross multiply
    227.77x = 314.21 × 149.09
  4. Step 4: Simplify right side
    227.77x = 46,844.37
  5. Step 5: Solve for x
    x = 46,844.37/227.77
  6. Step 6: Final answer
    x = 205.67

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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.