Home / 1,160.50-1,741.31-511.15

Finding the Fourth Proportional to 1,160.50, 1,741.31 and 511.15

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Solution

The fourth proportional to 1,160.50, 1,741.31 and 511.15 is: 766.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,160.50 : 1,741.31 = 511.15 : x
  2. Step 2: Convert to fraction form
    1,160.50/1,741.31 = 511.15/x
  3. Step 3: Cross multiply
    1,160.50x = 1,741.31 × 511.15
  4. Step 4: Simplify right side
    1,160.50x = 890,070.61
  5. Step 5: Solve for x
    x = 890,070.61/1,160.50
  6. Step 6: Final answer
    x = 766.97

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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.