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Finding the Fourth Proportional to 247.63, 341.75 and 154.38

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Solution

The fourth proportional to 247.63, 341.75 and 154.38 is: 213.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.63 : 341.75 = 154.38 : x
  2. Step 2: Convert to fraction form
    247.63/341.75 = 154.38/x
  3. Step 3: Cross multiply
    247.63x = 341.75 × 154.38
  4. Step 4: Simplify right side
    247.63x = 52,759.37
  5. Step 5: Solve for x
    x = 52,759.37/247.63
  6. Step 6: Final answer
    x = 213.06

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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.