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Finding the Fourth Proportional to 224.36, 309.30 and 158.66

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Solution

The fourth proportional to 224.36, 309.30 and 158.66 is: 218.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.36 : 309.30 = 158.66 : x
  2. Step 2: Convert to fraction form
    224.36/309.30 = 158.66/x
  3. Step 3: Cross multiply
    224.36x = 309.30 × 158.66
  4. Step 4: Simplify right side
    224.36x = 49,073.54
  5. Step 5: Solve for x
    x = 49,073.54/224.36
  6. Step 6: Final answer
    x = 218.73

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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.