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Finding the Fourth Proportional to 329.15, 492.86 and 226.65

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Solution

The fourth proportional to 329.15, 492.86 and 226.65 is: 339.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    329.15 : 492.86 = 226.65 : x
  2. Step 2: Convert to fraction form
    329.15/492.86 = 226.65/x
  3. Step 3: Cross multiply
    329.15x = 492.86 × 226.65
  4. Step 4: Simplify right side
    329.15x = 111,707.29
  5. Step 5: Solve for x
    x = 111,707.29/329.15
  6. Step 6: Final answer
    x = 339.38

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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.