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Finding the Fourth Proportional to 247.56, 339.42 and 246.90

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Solution

The fourth proportional to 247.56, 339.42 and 246.90 is: 338.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.56 : 339.42 = 246.90 : x
  2. Step 2: Convert to fraction form
    247.56/339.42 = 246.90/x
  3. Step 3: Cross multiply
    247.56x = 339.42 × 246.90
  4. Step 4: Simplify right side
    247.56x = 83,802.80
  5. Step 5: Solve for x
    x = 83,802.80/247.56
  6. Step 6: Final answer
    x = 338.52

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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.