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Finding the Fourth Proportional to 334.21, 461.22 and 186.85

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Solution

The fourth proportional to 334.21, 461.22 and 186.85 is: 257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    334.21 : 461.22 = 186.85 : x
  2. Step 2: Convert to fraction form
    334.21/461.22 = 186.85/x
  3. Step 3: Cross multiply
    334.21x = 461.22 × 186.85
  4. Step 4: Simplify right side
    334.21x = 86,178.96
  5. Step 5: Solve for x
    x = 86,178.96/334.21
  6. Step 6: Final answer
    x = 257.86

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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.