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Finding the Fourth Proportional to 310.56, 467.79 and 238.92

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Solution

The fourth proportional to 310.56, 467.79 and 238.92 is: 359.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    310.56 : 467.79 = 238.92 : x
  2. Step 2: Convert to fraction form
    310.56/467.79 = 238.92/x
  3. Step 3: Cross multiply
    310.56x = 467.79 × 238.92
  4. Step 4: Simplify right side
    310.56x = 111,764.39
  5. Step 5: Solve for x
    x = 111,764.39/310.56
  6. Step 6: Final answer
    x = 359.88

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.