Home / 1,053.28-1,579.26-403.72

Finding the Fourth Proportional to 1,053.28, 1,579.26 and 403.72

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Solution

The fourth proportional to 1,053.28, 1,579.26 and 403.72 is: 605.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.28 : 1,579.26 = 403.72 : x
  2. Step 2: Convert to fraction form
    1,053.28/1,579.26 = 403.72/x
  3. Step 3: Cross multiply
    1,053.28x = 1,579.26 × 403.72
  4. Step 4: Simplify right side
    1,053.28x = 637,578.85
  5. Step 5: Solve for x
    x = 637,578.85/1,053.28
  6. Step 6: Final answer
    x = 605.33

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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.