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Finding the Fourth Proportional to 226.29, 338.99 and 156.87

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Solution

The fourth proportional to 226.29, 338.99 and 156.87 is: 234.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.29 : 338.99 = 156.87 : x
  2. Step 2: Convert to fraction form
    226.29/338.99 = 156.87/x
  3. Step 3: Cross multiply
    226.29x = 338.99 × 156.87
  4. Step 4: Simplify right side
    226.29x = 53,176.58
  5. Step 5: Solve for x
    x = 53,176.58/226.29
  6. Step 6: Final answer
    x = 234.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.