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Finding the Fourth Proportional to 293.54, 440.28 and 139.23

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Solution

The fourth proportional to 293.54, 440.28 and 139.23 is: 208.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.54 : 440.28 = 139.23 : x
  2. Step 2: Convert to fraction form
    293.54/440.28 = 139.23/x
  3. Step 3: Cross multiply
    293.54x = 440.28 × 139.23
  4. Step 4: Simplify right side
    293.54x = 61,299.49
  5. Step 5: Solve for x
    x = 61,299.49/293.54
  6. Step 6: Final answer
    x = 208.83

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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.