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Finding the Fourth Proportional to 2,944.99, 4,418.16 and 865.15

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Solution

The fourth proportional to 2,944.99, 4,418.16 and 865.15 is: 1,297.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,944.99 : 4,418.16 = 865.15 : x
  2. Step 2: Convert to fraction form
    2,944.99/4,418.16 = 865.15/x
  3. Step 3: Cross multiply
    2,944.99x = 4,418.16 × 865.15
  4. Step 4: Simplify right side
    2,944.99x = 3,822,349.03
  5. Step 5: Solve for x
    x = 3,822,349.03/2,944.99
  6. Step 6: Final answer
    x = 1,297.92

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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.