Home / 1,236.20-1,852.90-505.37

Finding the Fourth Proportional to 1,236.20, 1,852.90 and 505.37

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Solution

The fourth proportional to 1,236.20, 1,852.90 and 505.37 is: 757.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,236.20 : 1,852.90 = 505.37 : x
  2. Step 2: Convert to fraction form
    1,236.20/1,852.90 = 505.37/x
  3. Step 3: Cross multiply
    1,236.20x = 1,852.90 × 505.37
  4. Step 4: Simplify right side
    1,236.20x = 936,403.44
  5. Step 5: Solve for x
    x = 936,403.44/1,236.20
  6. Step 6: Final answer
    x = 757.49

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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.