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Finding the Fourth Proportional to 319.39, 478.74 and 182.14

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Solution

The fourth proportional to 319.39, 478.74 and 182.14 is: 273.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.39 : 478.74 = 182.14 : x
  2. Step 2: Convert to fraction form
    319.39/478.74 = 182.14/x
  3. Step 3: Cross multiply
    319.39x = 478.74 × 182.14
  4. Step 4: Simplify right side
    319.39x = 87,197.33
  5. Step 5: Solve for x
    x = 87,197.33/319.39
  6. Step 6: Final answer
    x = 273.01

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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.