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Finding the Fourth Proportional to 275.28, 379.91 and 150.95

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Solution

The fourth proportional to 275.28, 379.91 and 150.95 is: 208.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.28 : 379.91 = 150.95 : x
  2. Step 2: Convert to fraction form
    275.28/379.91 = 150.95/x
  3. Step 3: Cross multiply
    275.28x = 379.91 × 150.95
  4. Step 4: Simplify right side
    275.28x = 57,345.76
  5. Step 5: Solve for x
    x = 57,345.76/275.28
  6. Step 6: Final answer
    x = 208.32

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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.