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Finding the Fourth Proportional to 843.56, 1,265.29 and 295.79

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Solution

The fourth proportional to 843.56, 1,265.29 and 295.79 is: 443.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.56 : 1,265.29 = 295.79 : x
  2. Step 2: Convert to fraction form
    843.56/1,265.29 = 295.79/x
  3. Step 3: Cross multiply
    843.56x = 1,265.29 × 295.79
  4. Step 4: Simplify right side
    843.56x = 374,262.55
  5. Step 5: Solve for x
    x = 374,262.55/843.56
  6. Step 6: Final answer
    x = 443.67

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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.