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Finding the Fourth Proportional to 319.73, 479.01 and 165.41

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Solution

The fourth proportional to 319.73, 479.01 and 165.41 is: 247.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.73 : 479.01 = 165.41 : x
  2. Step 2: Convert to fraction form
    319.73/479.01 = 165.41/x
  3. Step 3: Cross multiply
    319.73x = 479.01 × 165.41
  4. Step 4: Simplify right side
    319.73x = 79,233.04
  5. Step 5: Solve for x
    x = 79,233.04/319.73
  6. Step 6: Final answer
    x = 247.81

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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.