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Finding the Fourth Proportional to 224.08, 309.17 and 135.49

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Solution

The fourth proportional to 224.08, 309.17 and 135.49 is: 186.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.08 : 309.17 = 135.49 : x
  2. Step 2: Convert to fraction form
    224.08/309.17 = 135.49/x
  3. Step 3: Cross multiply
    224.08x = 309.17 × 135.49
  4. Step 4: Simplify right side
    224.08x = 41,889.44
  5. Step 5: Solve for x
    x = 41,889.44/224.08
  6. Step 6: Final answer
    x = 186.94

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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.