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Finding the Fourth Proportional to 1,082.87, 1,622.14 and 835.20

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Solution

The fourth proportional to 1,082.87, 1,622.14 and 835.20 is: 1,251.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.87 : 1,622.14 = 835.20 : x
  2. Step 2: Convert to fraction form
    1,082.87/1,622.14 = 835.20/x
  3. Step 3: Cross multiply
    1,082.87x = 1,622.14 × 835.20
  4. Step 4: Simplify right side
    1,082.87x = 1,354,811.33
  5. Step 5: Solve for x
    x = 1,354,811.33/1,082.87
  6. Step 6: Final answer
    x = 1,251.13

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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.