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Finding the Fourth Proportional to 224.43, 309.77 and 154.50

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Solution

The fourth proportional to 224.43, 309.77 and 154.50 is: 213.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.43 : 309.77 = 154.50 : x
  2. Step 2: Convert to fraction form
    224.43/309.77 = 154.50/x
  3. Step 3: Cross multiply
    224.43x = 309.77 × 154.50
  4. Step 4: Simplify right side
    224.43x = 47,859.47
  5. Step 5: Solve for x
    x = 47,859.47/224.43
  6. Step 6: Final answer
    x = 213.25

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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.