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Finding the Fourth Proportional to 275.92, 380.81 and 177.75

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Solution

The fourth proportional to 275.92, 380.81 and 177.75 is: 245.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.92 : 380.81 = 177.75 : x
  2. Step 2: Convert to fraction form
    275.92/380.81 = 177.75/x
  3. Step 3: Cross multiply
    275.92x = 380.81 × 177.75
  4. Step 4: Simplify right side
    275.92x = 67,689.42
  5. Step 5: Solve for x
    x = 67,689.42/275.92
  6. Step 6: Final answer
    x = 245.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.