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Finding the Fourth Proportional to 852.60, 1,278.48 and 304.62

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Solution

The fourth proportional to 852.60, 1,278.48 and 304.62 is: 456.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.60 : 1,278.48 = 304.62 : x
  2. Step 2: Convert to fraction form
    852.60/1,278.48 = 304.62/x
  3. Step 3: Cross multiply
    852.60x = 1,278.48 × 304.62
  4. Step 4: Simplify right side
    852.60x = 389,450.58
  5. Step 5: Solve for x
    x = 389,450.58/852.60
  6. Step 6: Final answer
    x = 456.78

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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.