Home / 1,180.29-1,769.19-399.59

Finding the Fourth Proportional to 1,180.29, 1,769.19 and 399.59

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Solution

The fourth proportional to 1,180.29, 1,769.19 and 399.59 is: 598.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,180.29 : 1,769.19 = 399.59 : x
  2. Step 2: Convert to fraction form
    1,180.29/1,769.19 = 399.59/x
  3. Step 3: Cross multiply
    1,180.29x = 1,769.19 × 399.59
  4. Step 4: Simplify right side
    1,180.29x = 706,950.63
  5. Step 5: Solve for x
    x = 706,950.63/1,180.29
  6. Step 6: Final answer
    x = 598.96

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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.