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Finding the Fourth Proportional to 293.17, 439.62 and 139.27

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Solution

The fourth proportional to 293.17, 439.62 and 139.27 is: 208.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    293.17 : 439.62 = 139.27 : x
  2. Step 2: Convert to fraction form
    293.17/439.62 = 139.27/x
  3. Step 3: Cross multiply
    293.17x = 439.62 × 139.27
  4. Step 4: Simplify right side
    293.17x = 61,225.88
  5. Step 5: Solve for x
    x = 61,225.88/293.17
  6. Step 6: Final answer
    x = 208.84

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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.