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Finding the Fourth Proportional to 330.80, 496.44 and 114.56

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Solution

The fourth proportional to 330.80, 496.44 and 114.56 is: 171.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.80 : 496.44 = 114.56 : x
  2. Step 2: Convert to fraction form
    330.80/496.44 = 114.56/x
  3. Step 3: Cross multiply
    330.80x = 496.44 × 114.56
  4. Step 4: Simplify right side
    330.80x = 56,872.17
  5. Step 5: Solve for x
    x = 56,872.17/330.80
  6. Step 6: Final answer
    x = 171.92

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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.