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Finding the Fourth Proportional to 275.92, 414.16 and 131.68

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Solution

The fourth proportional to 275.92, 414.16 and 131.68 is: 197.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.92 : 414.16 = 131.68 : x
  2. Step 2: Convert to fraction form
    275.92/414.16 = 131.68/x
  3. Step 3: Cross multiply
    275.92x = 414.16 × 131.68
  4. Step 4: Simplify right side
    275.92x = 54,536.59
  5. Step 5: Solve for x
    x = 54,536.59/275.92
  6. Step 6: Final answer
    x = 197.65

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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.