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Finding the Fourth Proportional to 270.20, 372.66 and 191.68

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Solution

The fourth proportional to 270.20, 372.66 and 191.68 is: 264.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.20 : 372.66 = 191.68 : x
  2. Step 2: Convert to fraction form
    270.20/372.66 = 191.68/x
  3. Step 3: Cross multiply
    270.20x = 372.66 × 191.68
  4. Step 4: Simplify right side
    270.20x = 71,431.47
  5. Step 5: Solve for x
    x = 71,431.47/270.20
  6. Step 6: Final answer
    x = 264.37

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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.