Home / 1,439.27-2,158.90-465.44

Finding the Fourth Proportional to 1,439.27, 2,158.90 and 465.44

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Solution

The fourth proportional to 1,439.27, 2,158.90 and 465.44 is: 698.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.27 : 2,158.90 = 465.44 : x
  2. Step 2: Convert to fraction form
    1,439.27/2,158.90 = 465.44/x
  3. Step 3: Cross multiply
    1,439.27x = 2,158.90 × 465.44
  4. Step 4: Simplify right side
    1,439.27x = 1,004,842.65
  5. Step 5: Solve for x
    x = 1,004,842.65/1,439.27
  6. Step 6: Final answer
    x = 698.16

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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.