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Finding the Fourth Proportional to 319.05, 440.26 and 179.15

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Solution

The fourth proportional to 319.05, 440.26 and 179.15 is: 247.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.05 : 440.26 = 179.15 : x
  2. Step 2: Convert to fraction form
    319.05/440.26 = 179.15/x
  3. Step 3: Cross multiply
    319.05x = 440.26 × 179.15
  4. Step 4: Simplify right side
    319.05x = 78,869.93
  5. Step 5: Solve for x
    x = 78,869.93/319.05
  6. Step 6: Final answer
    x = 247.20

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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.