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Finding the Fourth Proportional to 227.60, 313.64 and 161.92

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Solution

The fourth proportional to 227.60, 313.64 and 161.92 is: 223.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.60 : 313.64 = 161.92 : x
  2. Step 2: Convert to fraction form
    227.60/313.64 = 161.92/x
  3. Step 3: Cross multiply
    227.60x = 313.64 × 161.92
  4. Step 4: Simplify right side
    227.60x = 50,784.59
  5. Step 5: Solve for x
    x = 50,784.59/227.60
  6. Step 6: Final answer
    x = 223.13

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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.