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Finding the Fourth Proportional to 1,082.09, 1,493.19 and 616.34

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Solution

The fourth proportional to 1,082.09, 1,493.19 and 616.34 is: 850.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,082.09 : 1,493.19 = 616.34 : x
  2. Step 2: Convert to fraction form
    1,082.09/1,493.19 = 616.34/x
  3. Step 3: Cross multiply
    1,082.09x = 1,493.19 × 616.34
  4. Step 4: Simplify right side
    1,082.09x = 920,305.26
  5. Step 5: Solve for x
    x = 920,305.26/1,082.09
  6. Step 6: Final answer
    x = 850.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.