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Finding the Fourth Proportional to 496.88, 745.36 and 131.70

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Solution

The fourth proportional to 496.88, 745.36 and 131.70 is: 197.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.88 : 745.36 = 131.70 : x
  2. Step 2: Convert to fraction form
    496.88/745.36 = 131.70/x
  3. Step 3: Cross multiply
    496.88x = 745.36 × 131.70
  4. Step 4: Simplify right side
    496.88x = 98,163.91
  5. Step 5: Solve for x
    x = 98,163.91/496.88
  6. Step 6: Final answer
    x = 197.56

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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.