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Finding the Fourth Proportional to 270.95, 374.24 and 197.15

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Solution

The fourth proportional to 270.95, 374.24 and 197.15 is: 272.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.95 : 374.24 = 197.15 : x
  2. Step 2: Convert to fraction form
    270.95/374.24 = 197.15/x
  3. Step 3: Cross multiply
    270.95x = 374.24 × 197.15
  4. Step 4: Simplify right side
    270.95x = 73,781.42
  5. Step 5: Solve for x
    x = 73,781.42/270.95
  6. Step 6: Final answer
    x = 272.31

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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.