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Finding the Fourth Proportional to 247.75, 341.94 and 144.31

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Solution

The fourth proportional to 247.75, 341.94 and 144.31 is: 199.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.75 : 341.94 = 144.31 : x
  2. Step 2: Convert to fraction form
    247.75/341.94 = 144.31/x
  3. Step 3: Cross multiply
    247.75x = 341.94 × 144.31
  4. Step 4: Simplify right side
    247.75x = 49,345.36
  5. Step 5: Solve for x
    x = 49,345.36/247.75
  6. Step 6: Final answer
    x = 199.17

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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.