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Finding the Fourth Proportional to 852.19, 1,278.13 and 227.49

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Solution

The fourth proportional to 852.19, 1,278.13 and 227.49 is: 341.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.19 : 1,278.13 = 227.49 : x
  2. Step 2: Convert to fraction form
    852.19/1,278.13 = 227.49/x
  3. Step 3: Cross multiply
    852.19x = 1,278.13 × 227.49
  4. Step 4: Simplify right side
    852.19x = 290,765.56
  5. Step 5: Solve for x
    x = 290,765.56/852.19
  6. Step 6: Final answer
    x = 341.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.