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Finding the Fourth Proportional to 275.10, 379.38 and 181.75

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Solution

The fourth proportional to 275.10, 379.38 and 181.75 is: 250.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.10 : 379.38 = 181.75 : x
  2. Step 2: Convert to fraction form
    275.10/379.38 = 181.75/x
  3. Step 3: Cross multiply
    275.10x = 379.38 × 181.75
  4. Step 4: Simplify right side
    275.10x = 68,950.42
  5. Step 5: Solve for x
    x = 68,950.42/275.10
  6. Step 6: Final answer
    x = 250.64

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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.