Home / 1,449.39-2,173.90-409.47

Finding the Fourth Proportional to 1,449.39, 2,173.90 and 409.47

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Solution

The fourth proportional to 1,449.39, 2,173.90 and 409.47 is: 614.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,449.39 : 2,173.90 = 409.47 : x
  2. Step 2: Convert to fraction form
    1,449.39/2,173.90 = 409.47/x
  3. Step 3: Cross multiply
    1,449.39x = 2,173.90 × 409.47
  4. Step 4: Simplify right side
    1,449.39x = 890,146.83
  5. Step 5: Solve for x
    x = 890,146.83/1,449.39
  6. Step 6: Final answer
    x = 614.15

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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.