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Finding the Fourth Proportional to 833.08, 1,249.77 and 285.13

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Solution

The fourth proportional to 833.08, 1,249.77 and 285.13 is: 427.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.08 : 1,249.77 = 285.13 : x
  2. Step 2: Convert to fraction form
    833.08/1,249.77 = 285.13/x
  3. Step 3: Cross multiply
    833.08x = 1,249.77 × 285.13
  4. Step 4: Simplify right side
    833.08x = 356,346.92
  5. Step 5: Solve for x
    x = 356,346.92/833.08
  6. Step 6: Final answer
    x = 427.75

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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.