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Finding the Fourth Proportional to 330.63, 496.23 and 157.38

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Solution

The fourth proportional to 330.63, 496.23 and 157.38 is: 236.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    330.63 : 496.23 = 157.38 : x
  2. Step 2: Convert to fraction form
    330.63/496.23 = 157.38/x
  3. Step 3: Cross multiply
    330.63x = 496.23 × 157.38
  4. Step 4: Simplify right side
    330.63x = 78,096.68
  5. Step 5: Solve for x
    x = 78,096.68/330.63
  6. Step 6: Final answer
    x = 236.21

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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.