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Finding the Fourth Proportional to 224.52, 309.86 and 137.16

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Solution

The fourth proportional to 224.52, 309.86 and 137.16 is: 189.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.52 : 309.86 = 137.16 : x
  2. Step 2: Convert to fraction form
    224.52/309.86 = 137.16/x
  3. Step 3: Cross multiply
    224.52x = 309.86 × 137.16
  4. Step 4: Simplify right side
    224.52x = 42,500.40
  5. Step 5: Solve for x
    x = 42,500.40/224.52
  6. Step 6: Final answer
    x = 189.29

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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.