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Finding the Fourth Proportional to 248.23, 371.80 and 111.08

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Solution

The fourth proportional to 248.23, 371.80 and 111.08 is: 166.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.23 : 371.80 = 111.08 : x
  2. Step 2: Convert to fraction form
    248.23/371.80 = 111.08/x
  3. Step 3: Cross multiply
    248.23x = 371.80 × 111.08
  4. Step 4: Simplify right side
    248.23x = 41,300.61
  5. Step 5: Solve for x
    x = 41,300.61/248.23
  6. Step 6: Final answer
    x = 166.38

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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.