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Finding the Fourth Proportional to 243.20, 364.82 and 224.18

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Solution

The fourth proportional to 243.20, 364.82 and 224.18 is: 336.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    243.20 : 364.82 = 224.18 : x
  2. Step 2: Convert to fraction form
    243.20/364.82 = 224.18/x
  3. Step 3: Cross multiply
    243.20x = 364.82 × 224.18
  4. Step 4: Simplify right side
    243.20x = 81,782.40
  5. Step 5: Solve for x
    x = 81,782.40/243.20
  6. Step 6: Final answer
    x = 336.28

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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.