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Finding the Fourth Proportional to 395.76, 546.12 and 238.44

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Solution

The fourth proportional to 395.76, 546.12 and 238.44 is: 329.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.76 : 546.12 = 238.44 : x
  2. Step 2: Convert to fraction form
    395.76/546.12 = 238.44/x
  3. Step 3: Cross multiply
    395.76x = 546.12 × 238.44
  4. Step 4: Simplify right side
    395.76x = 130,216.85
  5. Step 5: Solve for x
    x = 130,216.85/395.76
  6. Step 6: Final answer
    x = 329.03

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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.