Home / 1,449.16-2,173.60-409.15

Finding the Fourth Proportional to 1,449.16, 2,173.60 and 409.15

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Solution

The fourth proportional to 1,449.16, 2,173.60 and 409.15 is: 613.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.16 : 2,173.60 = 409.15 : x
  2. Step 2: Convert to fraction form
    1,449.16/2,173.60 = 409.15/x
  3. Step 3: Cross multiply
    1,449.16x = 2,173.60 × 409.15
  4. Step 4: Simplify right side
    1,449.16x = 889,317.57
  5. Step 5: Solve for x
    x = 889,317.57/1,449.16
  6. Step 6: Final answer
    x = 613.68

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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.