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Finding the Fourth Proportional to 272.80, 376.55 and 173.28

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Solution

The fourth proportional to 272.80, 376.55 and 173.28 is: 239.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.80 : 376.55 = 173.28 : x
  2. Step 2: Convert to fraction form
    272.80/376.55 = 173.28/x
  3. Step 3: Cross multiply
    272.80x = 376.55 × 173.28
  4. Step 4: Simplify right side
    272.80x = 65,250.75
  5. Step 5: Solve for x
    x = 65,250.75/272.80
  6. Step 6: Final answer
    x = 239.19

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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.