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Finding the Fourth Proportional to 275.52, 380.49 and 220.08

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Solution

The fourth proportional to 275.52, 380.49 and 220.08 is: 303.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.52 : 380.49 = 220.08 : x
  2. Step 2: Convert to fraction form
    275.52/380.49 = 220.08/x
  3. Step 3: Cross multiply
    275.52x = 380.49 × 220.08
  4. Step 4: Simplify right side
    275.52x = 83,738.24
  5. Step 5: Solve for x
    x = 83,738.24/275.52
  6. Step 6: Final answer
    x = 303.93

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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.