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Finding the Fourth Proportional to 194.22, 268.28 and 157.82

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Solution

The fourth proportional to 194.22, 268.28 and 157.82 is: 218.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.22 : 268.28 = 157.82 : x
  2. Step 2: Convert to fraction form
    194.22/268.28 = 157.82/x
  3. Step 3: Cross multiply
    194.22x = 268.28 × 157.82
  4. Step 4: Simplify right side
    194.22x = 42,339.95
  5. Step 5: Solve for x
    x = 42,339.95/194.22
  6. Step 6: Final answer
    x = 218.00

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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.