Home / 1,144.26-1,716.39-278.58

Finding the Fourth Proportional to 1,144.26, 1,716.39 and 278.58

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Solution

The fourth proportional to 1,144.26, 1,716.39 and 278.58 is: 417.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.26 : 1,716.39 = 278.58 : x
  2. Step 2: Convert to fraction form
    1,144.26/1,716.39 = 278.58/x
  3. Step 3: Cross multiply
    1,144.26x = 1,716.39 × 278.58
  4. Step 4: Simplify right side
    1,144.26x = 478,151.93
  5. Step 5: Solve for x
    x = 478,151.93/1,144.26
  6. Step 6: Final answer
    x = 417.87

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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.