Home / 1,485.38-2,227.88-445.38

Finding the Fourth Proportional to 1,485.38, 2,227.88 and 445.38

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Solution

The fourth proportional to 1,485.38, 2,227.88 and 445.38 is: 668.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.38 : 2,227.88 = 445.38 : x
  2. Step 2: Convert to fraction form
    1,485.38/2,227.88 = 445.38/x
  3. Step 3: Cross multiply
    1,485.38x = 2,227.88 × 445.38
  4. Step 4: Simplify right side
    1,485.38x = 992,250.97
  5. Step 5: Solve for x
    x = 992,250.97/1,485.38
  6. Step 6: Final answer
    x = 668.01

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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.