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Finding the Fourth Proportional to 223.44, 307.86 and 161.16

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Solution

The fourth proportional to 223.44, 307.86 and 161.16 is: 222.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    223.44 : 307.86 = 161.16 : x
  2. Step 2: Convert to fraction form
    223.44/307.86 = 161.16/x
  3. Step 3: Cross multiply
    223.44x = 307.86 × 161.16
  4. Step 4: Simplify right side
    223.44x = 49,614.72
  5. Step 5: Solve for x
    x = 49,614.72/223.44
  6. Step 6: Final answer
    x = 222.05

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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.