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Finding the Fourth Proportional to 833.82, 1,250.50 and 286.13

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Solution

The fourth proportional to 833.82, 1,250.50 and 286.13 is: 429.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    833.82 : 1,250.50 = 286.13 : x
  2. Step 2: Convert to fraction form
    833.82/1,250.50 = 286.13/x
  3. Step 3: Cross multiply
    833.82x = 1,250.50 × 286.13
  4. Step 4: Simplify right side
    833.82x = 357,805.57
  5. Step 5: Solve for x
    x = 357,805.57/833.82
  6. Step 6: Final answer
    x = 429.12

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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.