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Finding the Fourth Proportional to 833.43, 1,249.26 and 306

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Solution

The fourth proportional to 833.43, 1,249.26 and 306 is: 458.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.43 : 1,249.26 = 306 : x
  2. Step 2: Convert to fraction form
    833.43/1,249.26 = 306/x
  3. Step 3: Cross multiply
    833.43x = 1,249.26 × 306
  4. Step 4: Simplify right side
    833.43x = 382,273.56
  5. Step 5: Solve for x
    x = 382,273.56/833.43
  6. Step 6: Final answer
    x = 458.68

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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.