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Finding the Fourth Proportional to 805.99, 1,209.16 and 250.69

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Solution

The fourth proportional to 805.99, 1,209.16 and 250.69 is: 376.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    805.99 : 1,209.16 = 250.69 : x
  2. Step 2: Convert to fraction form
    805.99/1,209.16 = 250.69/x
  3. Step 3: Cross multiply
    805.99x = 1,209.16 × 250.69
  4. Step 4: Simplify right side
    805.99x = 303,121.61
  5. Step 5: Solve for x
    x = 303,121.61/805.99
  6. Step 6: Final answer
    x = 376.09

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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.