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Finding the Fourth Proportional to 833.41, 1,250.18 and 486.78

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Solution

The fourth proportional to 833.41, 1,250.18 and 486.78 is: 730.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.41 : 1,250.18 = 486.78 : x
  2. Step 2: Convert to fraction form
    833.41/1,250.18 = 486.78/x
  3. Step 3: Cross multiply
    833.41x = 1,250.18 × 486.78
  4. Step 4: Simplify right side
    833.41x = 608,562.62
  5. Step 5: Solve for x
    x = 608,562.62/833.41
  6. Step 6: Final answer
    x = 730.21

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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.