Home / 1,445.50-2,169.19-579.88

Finding the Fourth Proportional to 1,445.50, 2,169.19 and 579.88

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Solution

The fourth proportional to 1,445.50, 2,169.19 and 579.88 is: 870.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.50 : 2,169.19 = 579.88 : x
  2. Step 2: Convert to fraction form
    1,445.50/2,169.19 = 579.88/x
  3. Step 3: Cross multiply
    1,445.50x = 2,169.19 × 579.88
  4. Step 4: Simplify right side
    1,445.50x = 1,257,859.05
  5. Step 5: Solve for x
    x = 1,257,859.05/1,445.50
  6. Step 6: Final answer
    x = 870.19

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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.