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Finding the Fourth Proportional to 872.92, 1,309.50 and 295.96

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Solution

The fourth proportional to 872.92, 1,309.50 and 295.96 is: 443.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    872.92 : 1,309.50 = 295.96 : x
  2. Step 2: Convert to fraction form
    872.92/1,309.50 = 295.96/x
  3. Step 3: Cross multiply
    872.92x = 1,309.50 × 295.96
  4. Step 4: Simplify right side
    872.92x = 387,559.62
  5. Step 5: Solve for x
    x = 387,559.62/872.92
  6. Step 6: Final answer
    x = 443.98

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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.