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Finding the Fourth Proportional to 270.27, 372.51 and 211.16

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Solution

The fourth proportional to 270.27, 372.51 and 211.16 is: 291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.27 : 372.51 = 211.16 : x
  2. Step 2: Convert to fraction form
    270.27/372.51 = 211.16/x
  3. Step 3: Cross multiply
    270.27x = 372.51 × 211.16
  4. Step 4: Simplify right side
    270.27x = 78,660.14
  5. Step 5: Solve for x
    x = 78,660.14/270.27
  6. Step 6: Final answer
    x = 291.04

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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.