Home / 1,445.46-2,168.10-579.15

Finding the Fourth Proportional to 1,445.46, 2,168.10 and 579.15

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Solution

The fourth proportional to 1,445.46, 2,168.10 and 579.15 is: 868.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.46 : 2,168.10 = 579.15 : x
  2. Step 2: Convert to fraction form
    1,445.46/2,168.10 = 579.15/x
  3. Step 3: Cross multiply
    1,445.46x = 2,168.10 × 579.15
  4. Step 4: Simplify right side
    1,445.46x = 1,255,655.12
  5. Step 5: Solve for x
    x = 1,255,655.12/1,445.46
  6. Step 6: Final answer
    x = 868.69

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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.