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Finding the Fourth Proportional to 270.28, 372.97 and 153.83

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Solution

The fourth proportional to 270.28, 372.97 and 153.83 is: 212.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.28 : 372.97 = 153.83 : x
  2. Step 2: Convert to fraction form
    270.28/372.97 = 153.83/x
  3. Step 3: Cross multiply
    270.28x = 372.97 × 153.83
  4. Step 4: Simplify right side
    270.28x = 57,373.98
  5. Step 5: Solve for x
    x = 57,373.98/270.28
  6. Step 6: Final answer
    x = 212.28

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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.