Home / 1,179.05-1,767.27-485.36

Finding the Fourth Proportional to 1,179.05, 1,767.27 and 485.36

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Solution

The fourth proportional to 1,179.05, 1,767.27 and 485.36 is: 727.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,179.05 : 1,767.27 = 485.36 : x
  2. Step 2: Convert to fraction form
    1,179.05/1,767.27 = 485.36/x
  3. Step 3: Cross multiply
    1,179.05x = 1,767.27 × 485.36
  4. Step 4: Simplify right side
    1,179.05x = 857,753.33
  5. Step 5: Solve for x
    x = 857,753.33/1,179.05
  6. Step 6: Final answer
    x = 727.50

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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.