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Finding the Fourth Proportional to 319.10, 440.40 and 179.23

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Solution

The fourth proportional to 319.10, 440.40 and 179.23 is: 247.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.10 : 440.40 = 179.23 : x
  2. Step 2: Convert to fraction form
    319.10/440.40 = 179.23/x
  3. Step 3: Cross multiply
    319.10x = 440.40 × 179.23
  4. Step 4: Simplify right side
    319.10x = 78,932.89
  5. Step 5: Solve for x
    x = 78,932.89/319.10
  6. Step 6: Final answer
    x = 247.36

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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.