Home / 1,443.68-2,165.29-403.57

Finding the Fourth Proportional to 1,443.68, 2,165.29 and 403.57

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Solution

The fourth proportional to 1,443.68, 2,165.29 and 403.57 is: 605.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,443.68 : 2,165.29 = 403.57 : x
  2. Step 2: Convert to fraction form
    1,443.68/2,165.29 = 403.57/x
  3. Step 3: Cross multiply
    1,443.68x = 2,165.29 × 403.57
  4. Step 4: Simplify right side
    1,443.68x = 873,846.09
  5. Step 5: Solve for x
    x = 873,846.09/1,443.68
  6. Step 6: Final answer
    x = 605.29

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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.