Home / 1,485.52-2,228.34-445.54

Finding the Fourth Proportional to 1,485.52, 2,228.34 and 445.54

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Solution

The fourth proportional to 1,485.52, 2,228.34 and 445.54 is: 668.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.52 : 2,228.34 = 445.54 : x
  2. Step 2: Convert to fraction form
    1,485.52/2,228.34 = 445.54/x
  3. Step 3: Cross multiply
    1,485.52x = 2,228.34 × 445.54
  4. Step 4: Simplify right side
    1,485.52x = 992,814.60
  5. Step 5: Solve for x
    x = 992,814.60/1,485.52
  6. Step 6: Final answer
    x = 668.33

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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.