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Finding the Fourth Proportional to 1,265.69, 1,899.09 and 444.56

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Solution

The fourth proportional to 1,265.69, 1,899.09 and 444.56 is: 667.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,265.69 : 1,899.09 = 444.56 : x
  2. Step 2: Convert to fraction form
    1,265.69/1,899.09 = 444.56/x
  3. Step 3: Cross multiply
    1,265.69x = 1,899.09 × 444.56
  4. Step 4: Simplify right side
    1,265.69x = 844,249.95
  5. Step 5: Solve for x
    x = 844,249.95/1,265.69
  6. Step 6: Final answer
    x = 667.03

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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.