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Finding the Fourth Proportional to 227.63, 314.10 and 129.36

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Solution

The fourth proportional to 227.63, 314.10 and 129.36 is: 178.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.63 : 314.10 = 129.36 : x
  2. Step 2: Convert to fraction form
    227.63/314.10 = 129.36/x
  3. Step 3: Cross multiply
    227.63x = 314.10 × 129.36
  4. Step 4: Simplify right side
    227.63x = 40,631.98
  5. Step 5: Solve for x
    x = 40,631.98/227.63
  6. Step 6: Final answer
    x = 178.50

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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.