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Finding the Fourth Proportional to 496.31, 744.38 and 131.11

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Solution

The fourth proportional to 496.31, 744.38 and 131.11 is: 196.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.31 : 744.38 = 131.11 : x
  2. Step 2: Convert to fraction form
    496.31/744.38 = 131.11/x
  3. Step 3: Cross multiply
    496.31x = 744.38 × 131.11
  4. Step 4: Simplify right side
    496.31x = 97,594.13
  5. Step 5: Solve for x
    x = 97,594.13/496.31
  6. Step 6: Final answer
    x = 196.64

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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.