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Finding the Fourth Proportional to 226.81, 338.55 and 210.76

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Solution

The fourth proportional to 226.81, 338.55 and 210.76 is: 314.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.81 : 338.55 = 210.76 : x
  2. Step 2: Convert to fraction form
    226.81/338.55 = 210.76/x
  3. Step 3: Cross multiply
    226.81x = 338.55 × 210.76
  4. Step 4: Simplify right side
    226.81x = 71,351.74
  5. Step 5: Solve for x
    x = 71,351.74/226.81
  6. Step 6: Final answer
    x = 314.59

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.