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Finding the Fourth Proportional to 293.11, 403.89 and 272.61

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Solution

The fourth proportional to 293.11, 403.89 and 272.61 is: 375.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.11 : 403.89 = 272.61 : x
  2. Step 2: Convert to fraction form
    293.11/403.89 = 272.61/x
  3. Step 3: Cross multiply
    293.11x = 403.89 × 272.61
  4. Step 4: Simplify right side
    293.11x = 110,104.45
  5. Step 5: Solve for x
    x = 110,104.45/293.11
  6. Step 6: Final answer
    x = 375.64

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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.