Home / 1,514.26-2,271.21-418.78

Finding the Fourth Proportional to 1,514.26, 2,271.21 and 418.78

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Solution

The fourth proportional to 1,514.26, 2,271.21 and 418.78 is: 628.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,514.26 : 2,271.21 = 418.78 : x
  2. Step 2: Convert to fraction form
    1,514.26/2,271.21 = 418.78/x
  3. Step 3: Cross multiply
    1,514.26x = 2,271.21 × 418.78
  4. Step 4: Simplify right side
    1,514.26x = 951,137.32
  5. Step 5: Solve for x
    x = 951,137.32/1,514.26
  6. Step 6: Final answer
    x = 628.12

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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.