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Finding the Fourth Proportional to 272.20, 375.69 and 178.96

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Solution

The fourth proportional to 272.20, 375.69 and 178.96 is: 247.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.20 : 375.69 = 178.96 : x
  2. Step 2: Convert to fraction form
    272.20/375.69 = 178.96/x
  3. Step 3: Cross multiply
    272.20x = 375.69 × 178.96
  4. Step 4: Simplify right side
    272.20x = 67,233.48
  5. Step 5: Solve for x
    x = 67,233.48/272.20
  6. Step 6: Final answer
    x = 247.00

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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.