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Finding the Fourth Proportional to 1,503.69, 2,255.57 and 516.50

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Solution

The fourth proportional to 1,503.69, 2,255.57 and 516.50 is: 774.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,503.69 : 2,255.57 = 516.50 : x
  2. Step 2: Convert to fraction form
    1,503.69/2,255.57 = 516.50/x
  3. Step 3: Cross multiply
    1,503.69x = 2,255.57 × 516.50
  4. Step 4: Simplify right side
    1,503.69x = 1,164,998.21
  5. Step 5: Solve for x
    x = 1,164,998.21/1,503.69
  6. Step 6: Final answer
    x = 774.76

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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.