Home / 1,144.28-1,716.43-278.59

Finding the Fourth Proportional to 1,144.28, 1,716.43 and 278.59

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Solution

The fourth proportional to 1,144.28, 1,716.43 and 278.59 is: 417.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,144.28 : 1,716.43 = 278.59 : x
  2. Step 2: Convert to fraction form
    1,144.28/1,716.43 = 278.59/x
  3. Step 3: Cross multiply
    1,144.28x = 1,716.43 × 278.59
  4. Step 4: Simplify right side
    1,144.28x = 478,180.23
  5. Step 5: Solve for x
    x = 478,180.23/1,144.28
  6. Step 6: Final answer
    x = 417.89

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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.