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Finding the Fourth Proportional to 293.54, 439.39 and 228.72

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Solution

The fourth proportional to 293.54, 439.39 and 228.72 is: 342.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.54 : 439.39 = 228.72 : x
  2. Step 2: Convert to fraction form
    293.54/439.39 = 228.72/x
  3. Step 3: Cross multiply
    293.54x = 439.39 × 228.72
  4. Step 4: Simplify right side
    293.54x = 100,496.14
  5. Step 5: Solve for x
    x = 100,496.14/293.54
  6. Step 6: Final answer
    x = 342.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.