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Finding the Fourth Proportional to 1,236.03, 1,854.15 and 505.59

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Solution

The fourth proportional to 1,236.03, 1,854.15 and 505.59 is: 758.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236.03 : 1,854.15 = 505.59 : x
  2. Step 2: Convert to fraction form
    1,236.03/1,854.15 = 505.59/x
  3. Step 3: Cross multiply
    1,236.03x = 1,854.15 × 505.59
  4. Step 4: Simplify right side
    1,236.03x = 937,439.70
  5. Step 5: Solve for x
    x = 937,439.70/1,236.03
  6. Step 6: Final answer
    x = 758.43

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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.