Home / 1,179.29-1,769.38-439.35

Finding the Fourth Proportional to 1,179.29, 1,769.38 and 439.35

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Solution

The fourth proportional to 1,179.29, 1,769.38 and 439.35 is: 659.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.29 : 1,769.38 = 439.35 : x
  2. Step 2: Convert to fraction form
    1,179.29/1,769.38 = 439.35/x
  3. Step 3: Cross multiply
    1,179.29x = 1,769.38 × 439.35
  4. Step 4: Simplify right side
    1,179.29x = 777,376.00
  5. Step 5: Solve for x
    x = 777,376.00/1,179.29
  6. Step 6: Final answer
    x = 659.19

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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.