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Finding the Fourth Proportional to 247.86, 339.29 and 247.25

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Solution

The fourth proportional to 247.86, 339.29 and 247.25 is: 338.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.86 : 339.29 = 247.25 : x
  2. Step 2: Convert to fraction form
    247.86/339.29 = 247.25/x
  3. Step 3: Cross multiply
    247.86x = 339.29 × 247.25
  4. Step 4: Simplify right side
    247.86x = 83,889.99
  5. Step 5: Solve for x
    x = 83,889.99/247.86
  6. Step 6: Final answer
    x = 338.46

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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.