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Finding the Fourth Proportional to 308.65, 425.77 and 234.85

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Solution

The fourth proportional to 308.65, 425.77 and 234.85 is: 323.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    308.65 : 425.77 = 234.85 : x
  2. Step 2: Convert to fraction form
    308.65/425.77 = 234.85/x
  3. Step 3: Cross multiply
    308.65x = 425.77 × 234.85
  4. Step 4: Simplify right side
    308.65x = 99,992.08
  5. Step 5: Solve for x
    x = 99,992.08/308.65
  6. Step 6: Final answer
    x = 323.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.