Home / 920.14-1,380.20-226.81

Finding the Fourth Proportional to 920.14, 1,380.20 and 226.81

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Solution

The fourth proportional to 920.14, 1,380.20 and 226.81 is: 340.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.14 : 1,380.20 = 226.81 : x
  2. Step 2: Convert to fraction form
    920.14/1,380.20 = 226.81/x
  3. Step 3: Cross multiply
    920.14x = 1,380.20 × 226.81
  4. Step 4: Simplify right side
    920.14x = 313,042.03
  5. Step 5: Solve for x
    x = 313,042.03/920.14
  6. Step 6: Final answer
    x = 340.21

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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.