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Finding the Fourth Proportional to 395.73, 546.21 and 240.61

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Solution

The fourth proportional to 395.73, 546.21 and 240.61 is: 332.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.73 : 546.21 = 240.61 : x
  2. Step 2: Convert to fraction form
    395.73/546.21 = 240.61/x
  3. Step 3: Cross multiply
    395.73x = 546.21 × 240.61
  4. Step 4: Simplify right side
    395.73x = 131,422.39
  5. Step 5: Solve for x
    x = 131,422.39/395.73
  6. Step 6: Final answer
    x = 332.10

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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.