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Finding the Fourth Proportional to 1,503.72, 2,255.00 and 516.35

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Solution

The fourth proportional to 1,503.72, 2,255.00 and 516.35 is: 774.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,503.72 : 2,255.00 = 516.35 : x
  2. Step 2: Convert to fraction form
    1,503.72/2,255.00 = 516.35/x
  3. Step 3: Cross multiply
    1,503.72x = 2,255.00 × 516.35
  4. Step 4: Simplify right side
    1,503.72x = 1,164,367.08
  5. Step 5: Solve for x
    x = 1,164,367.08/1,503.72
  6. Step 6: Final answer
    x = 774.33

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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.