Home / 1,619.28-2,428.48-449.00

Finding the Fourth Proportional to 1,619.28, 2,428.48 and 449.00

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Solution

The fourth proportional to 1,619.28, 2,428.48 and 449.00 is: 673.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,619.28 : 2,428.48 = 449.00 : x
  2. Step 2: Convert to fraction form
    1,619.28/2,428.48 = 449.00/x
  3. Step 3: Cross multiply
    1,619.28x = 2,428.48 × 449.00
  4. Step 4: Simplify right side
    1,619.28x = 1,090,392.47
  5. Step 5: Solve for x
    x = 1,090,392.47/1,619.28
  6. Step 6: Final answer
    x = 673.38

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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.