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Finding the Fourth Proportional to 272.81, 376.26 and 173.18

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Solution

The fourth proportional to 272.81, 376.26 and 173.18 is: 238.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    272.81 : 376.26 = 173.18 : x
  2. Step 2: Convert to fraction form
    272.81/376.26 = 173.18/x
  3. Step 3: Cross multiply
    272.81x = 376.26 × 173.18
  4. Step 4: Simplify right side
    272.81x = 65,160.71
  5. Step 5: Solve for x
    x = 65,160.71/272.81
  6. Step 6: Final answer
    x = 238.85

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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.