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Finding the Fourth Proportional to 319.67, 441.15 and 179.81

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Solution

The fourth proportional to 319.67, 441.15 and 179.81 is: 248.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.67 : 441.15 = 179.81 : x
  2. Step 2: Convert to fraction form
    319.67/441.15 = 179.81/x
  3. Step 3: Cross multiply
    319.67x = 441.15 × 179.81
  4. Step 4: Simplify right side
    319.67x = 79,323.18
  5. Step 5: Solve for x
    x = 79,323.18/319.67
  6. Step 6: Final answer
    x = 248.14

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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.