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Finding the Fourth Proportional to 250.80, 346.26 and 198.55

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Solution

The fourth proportional to 250.80, 346.26 and 198.55 is: 274.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.80 : 346.26 = 198.55 : x
  2. Step 2: Convert to fraction form
    250.80/346.26 = 198.55/x
  3. Step 3: Cross multiply
    250.80x = 346.26 × 198.55
  4. Step 4: Simplify right side
    250.80x = 68,750.26
  5. Step 5: Solve for x
    x = 68,750.26/250.80
  6. Step 6: Final answer
    x = 274.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.