Home / 1,205.25-1,662.72-739.77

Finding the Fourth Proportional to 1,205.25, 1,662.72 and 739.77

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Solution

The fourth proportional to 1,205.25, 1,662.72 and 739.77 is: 1,020.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205.25 : 1,662.72 = 739.77 : x
  2. Step 2: Convert to fraction form
    1,205.25/1,662.72 = 739.77/x
  3. Step 3: Cross multiply
    1,205.25x = 1,662.72 × 739.77
  4. Step 4: Simplify right side
    1,205.25x = 1,230,030.37
  5. Step 5: Solve for x
    x = 1,230,030.37/1,205.25
  6. Step 6: Final answer
    x = 1,020.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.