Home / 1,449.14-2,173.54-409.22

Finding the Fourth Proportional to 1,449.14, 2,173.54 and 409.22

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Solution

The fourth proportional to 1,449.14, 2,173.54 and 409.22 is: 613.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.14 : 2,173.54 = 409.22 : x
  2. Step 2: Convert to fraction form
    1,449.14/2,173.54 = 409.22/x
  3. Step 3: Cross multiply
    1,449.14x = 2,173.54 × 409.22
  4. Step 4: Simplify right side
    1,449.14x = 889,460.45
  5. Step 5: Solve for x
    x = 889,460.45/1,449.14
  6. Step 6: Final answer
    x = 613.79

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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.