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Finding the Fourth Proportional to 1,133.26, 1,699.48 and 516.85

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Solution

The fourth proportional to 1,133.26, 1,699.48 and 516.85 is: 775.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,133.26 : 1,699.48 = 516.85 : x
  2. Step 2: Convert to fraction form
    1,133.26/1,699.48 = 516.85/x
  3. Step 3: Cross multiply
    1,133.26x = 1,699.48 × 516.85
  4. Step 4: Simplify right side
    1,133.26x = 878,376.24
  5. Step 5: Solve for x
    x = 878,376.24/1,133.26
  6. Step 6: Final answer
    x = 775.09

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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.