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Finding the Fourth Proportional to 496.83, 745.18 and 131.65

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Solution

The fourth proportional to 496.83, 745.18 and 131.65 is: 197.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.83 : 745.18 = 131.65 : x
  2. Step 2: Convert to fraction form
    496.83/745.18 = 131.65/x
  3. Step 3: Cross multiply
    496.83x = 745.18 × 131.65
  4. Step 4: Simplify right side
    496.83x = 98,102.95
  5. Step 5: Solve for x
    x = 98,102.95/496.83
  6. Step 6: Final answer
    x = 197.46

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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.