Home / 1,219.04-1,827.28-449.12

Finding the Fourth Proportional to 1,219.04, 1,827.28 and 449.12

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Solution

The fourth proportional to 1,219.04, 1,827.28 and 449.12 is: 673.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,219.04 : 1,827.28 = 449.12 : x
  2. Step 2: Convert to fraction form
    1,219.04/1,827.28 = 449.12/x
  3. Step 3: Cross multiply
    1,219.04x = 1,827.28 × 449.12
  4. Step 4: Simplify right side
    1,219.04x = 820,667.99
  5. Step 5: Solve for x
    x = 820,667.99/1,219.04
  6. Step 6: Final answer
    x = 673.21

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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.