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Finding the Fourth Proportional to 226.98, 340.19 and 129.56

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Solution

The fourth proportional to 226.98, 340.19 and 129.56 is: 194.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.98 : 340.19 = 129.56 : x
  2. Step 2: Convert to fraction form
    226.98/340.19 = 129.56/x
  3. Step 3: Cross multiply
    226.98x = 340.19 × 129.56
  4. Step 4: Simplify right side
    226.98x = 44,075.02
  5. Step 5: Solve for x
    x = 44,075.02/226.98
  6. Step 6: Final answer
    x = 194.18

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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.