Home / 1,160.80-1,741.60-511.44

Finding the Fourth Proportional to 1,160.80, 1,741.60 and 511.44

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Solution

The fourth proportional to 1,160.80, 1,741.60 and 511.44 is: 767.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160.80 : 1,741.60 = 511.44 : x
  2. Step 2: Convert to fraction form
    1,160.80/1,741.60 = 511.44/x
  3. Step 3: Cross multiply
    1,160.80x = 1,741.60 × 511.44
  4. Step 4: Simplify right side
    1,160.80x = 890,723.90
  5. Step 5: Solve for x
    x = 890,723.90/1,160.80
  6. Step 6: Final answer
    x = 767.34

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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.