Home / 1,439.29-2,158.19-465.26

Finding the Fourth Proportional to 1,439.29, 2,158.19 and 465.26

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Solution

The fourth proportional to 1,439.29, 2,158.19 and 465.26 is: 697.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,439.29 : 2,158.19 = 465.26 : x
  2. Step 2: Convert to fraction form
    1,439.29/2,158.19 = 465.26/x
  3. Step 3: Cross multiply
    1,439.29x = 2,158.19 × 465.26
  4. Step 4: Simplify right side
    1,439.29x = 1,004,117.15
  5. Step 5: Solve for x
    x = 1,004,117.15/1,439.29
  6. Step 6: Final answer
    x = 697.65

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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.