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Finding the Fourth Proportional to 1,027.10, 1,539.03 and 833.78

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Solution

The fourth proportional to 1,027.10, 1,539.03 and 833.78 is: 1,249.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,027.10 : 1,539.03 = 833.78 : x
  2. Step 2: Convert to fraction form
    1,027.10/1,539.03 = 833.78/x
  3. Step 3: Cross multiply
    1,027.10x = 1,539.03 × 833.78
  4. Step 4: Simplify right side
    1,027.10x = 1,283,212.43
  5. Step 5: Solve for x
    x = 1,283,212.43/1,027.10
  6. Step 6: Final answer
    x = 1,249.35

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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.