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Finding the Fourth Proportional to 247.35, 371.75 and 165.36

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Solution

The fourth proportional to 247.35, 371.75 and 165.36 is: 248.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.35 : 371.75 = 165.36 : x
  2. Step 2: Convert to fraction form
    247.35/371.75 = 165.36/x
  3. Step 3: Cross multiply
    247.35x = 371.75 × 165.36
  4. Step 4: Simplify right side
    247.35x = 61,470.36
  5. Step 5: Solve for x
    x = 61,470.36/247.35
  6. Step 6: Final answer
    x = 248.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.