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Finding the Fourth Proportional to 238.70, 328.78 and 183.33

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Solution

The fourth proportional to 238.70, 328.78 and 183.33 is: 252.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    238.70 : 328.78 = 183.33 : x
  2. Step 2: Convert to fraction form
    238.70/328.78 = 183.33/x
  3. Step 3: Cross multiply
    238.70x = 328.78 × 183.33
  4. Step 4: Simplify right side
    238.70x = 60,274.44
  5. Step 5: Solve for x
    x = 60,274.44/238.70
  6. Step 6: Final answer
    x = 252.51

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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.