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Finding the Fourth Proportional to 248.28, 371.70 and 174.90

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Solution

The fourth proportional to 248.28, 371.70 and 174.90 is: 261.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.28 : 371.70 = 174.90 : x
  2. Step 2: Convert to fraction form
    248.28/371.70 = 174.90/x
  3. Step 3: Cross multiply
    248.28x = 371.70 × 174.90
  4. Step 4: Simplify right side
    248.28x = 65,010.33
  5. Step 5: Solve for x
    x = 65,010.33/248.28
  6. Step 6: Final answer
    x = 261.84

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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.