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Finding the Fourth Proportional to 263.98, 364.79 and 198.37

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Solution

The fourth proportional to 263.98, 364.79 and 198.37 is: 274.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.98 : 364.79 = 198.37 : x
  2. Step 2: Convert to fraction form
    263.98/364.79 = 198.37/x
  3. Step 3: Cross multiply
    263.98x = 364.79 × 198.37
  4. Step 4: Simplify right side
    263.98x = 72,360.58
  5. Step 5: Solve for x
    x = 72,360.58/263.98
  6. Step 6: Final answer
    x = 274.12

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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.