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Finding the Fourth Proportional to 275.09, 379.73 and 170.17

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Solution

The fourth proportional to 275.09, 379.73 and 170.17 is: 234.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.09 : 379.73 = 170.17 : x
  2. Step 2: Convert to fraction form
    275.09/379.73 = 170.17/x
  3. Step 3: Cross multiply
    275.09x = 379.73 × 170.17
  4. Step 4: Simplify right side
    275.09x = 64,618.13
  5. Step 5: Solve for x
    x = 64,618.13/275.09
  6. Step 6: Final answer
    x = 234.90

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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.