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Finding the Fourth Proportional to 243.20, 336 and 184.88

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Solution

The fourth proportional to 243.20, 336 and 184.88 is: 255.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.20 : 336 = 184.88 : x
  2. Step 2: Convert to fraction form
    243.20/336 = 184.88/x
  3. Step 3: Cross multiply
    243.20x = 336 × 184.88
  4. Step 4: Simplify right side
    243.20x = 62,119.68
  5. Step 5: Solve for x
    x = 62,119.68/243.20
  6. Step 6: Final answer
    x = 255.43

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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.