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Finding the Fourth Proportional to 247.95, 339.68 and 238.71

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Solution

The fourth proportional to 247.95, 339.68 and 238.71 is: 327.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.95 : 339.68 = 238.71 : x
  2. Step 2: Convert to fraction form
    247.95/339.68 = 238.71/x
  3. Step 3: Cross multiply
    247.95x = 339.68 × 238.71
  4. Step 4: Simplify right side
    247.95x = 81,085.01
  5. Step 5: Solve for x
    x = 81,085.01/247.95
  6. Step 6: Final answer
    x = 327.02

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.