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Finding the Fourth Proportional to 248.46, 374 and 191

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Solution

The fourth proportional to 248.46, 374 and 191 is: 287.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.46 : 374 = 191 : x
  2. Step 2: Convert to fraction form
    248.46/374 = 191/x
  3. Step 3: Cross multiply
    248.46x = 374 × 191
  4. Step 4: Simplify right side
    248.46x = 71,434
  5. Step 5: Solve for x
    x = 71,434/248.46
  6. Step 6: Final answer
    x = 287.51

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.