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Finding the Fourth Proportional to 275.57, 379.98 and 200.91

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Solution

The fourth proportional to 275.57, 379.98 and 200.91 is: 277.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.57 : 379.98 = 200.91 : x
  2. Step 2: Convert to fraction form
    275.57/379.98 = 200.91/x
  3. Step 3: Cross multiply
    275.57x = 379.98 × 200.91
  4. Step 4: Simplify right side
    275.57x = 76,341.78
  5. Step 5: Solve for x
    x = 76,341.78/275.57
  6. Step 6: Final answer
    x = 277.03

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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.