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Finding the Fourth Proportional to 1,205.22, 1,806.72 and 475.32

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Solution

The fourth proportional to 1,205.22, 1,806.72 and 475.32 is: 712.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205.22 : 1,806.72 = 475.32 : x
  2. Step 2: Convert to fraction form
    1,205.22/1,806.72 = 475.32/x
  3. Step 3: Cross multiply
    1,205.22x = 1,806.72 × 475.32
  4. Step 4: Simplify right side
    1,205.22x = 858,770.15
  5. Step 5: Solve for x
    x = 858,770.15/1,205.22
  6. Step 6: Final answer
    x = 712.54

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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.