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Finding the Fourth Proportional to 496.85, 745.29 and 131.65

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Solution

The fourth proportional to 496.85, 745.29 and 131.65 is: 197.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.85 : 745.29 = 131.65 : x
  2. Step 2: Convert to fraction form
    496.85/745.29 = 131.65/x
  3. Step 3: Cross multiply
    496.85x = 745.29 × 131.65
  4. Step 4: Simplify right side
    496.85x = 98,117.43
  5. Step 5: Solve for x
    x = 98,117.43/496.85
  6. Step 6: Final answer
    x = 197.48

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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.