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Finding the Fourth Proportional to 334.68, 461.88 and 231

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Solution

The fourth proportional to 334.68, 461.88 and 231 is: 318.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.68 : 461.88 = 231 : x
  2. Step 2: Convert to fraction form
    334.68/461.88 = 231/x
  3. Step 3: Cross multiply
    334.68x = 461.88 × 231
  4. Step 4: Simplify right side
    334.68x = 106,694.28
  5. Step 5: Solve for x
    x = 106,694.28/334.68
  6. Step 6: Final answer
    x = 318.79

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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.