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Finding the Fourth Proportional to 319.59, 479.11 and 173.25

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Solution

The fourth proportional to 319.59, 479.11 and 173.25 is: 259.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.59 : 479.11 = 173.25 : x
  2. Step 2: Convert to fraction form
    319.59/479.11 = 173.25/x
  3. Step 3: Cross multiply
    319.59x = 479.11 × 173.25
  4. Step 4: Simplify right side
    319.59x = 83,005.81
  5. Step 5: Solve for x
    x = 83,005.81/319.59
  6. Step 6: Final answer
    x = 259.73

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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.