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Finding the Fourth Proportional to 248.52, 371.85 and 145.84

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Solution

The fourth proportional to 248.52, 371.85 and 145.84 is: 218.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.52 : 371.85 = 145.84 : x
  2. Step 2: Convert to fraction form
    248.52/371.85 = 145.84/x
  3. Step 3: Cross multiply
    248.52x = 371.85 × 145.84
  4. Step 4: Simplify right side
    248.52x = 54,230.60
  5. Step 5: Solve for x
    x = 54,230.60/248.52
  6. Step 6: Final answer
    x = 218.21

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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.