Home / 1,378.02-2,067.06-453.30

Finding the Fourth Proportional to 1,378.02, 2,067.06 and 453.30

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Solution

The fourth proportional to 1,378.02, 2,067.06 and 453.30 is: 679.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,378.02 : 2,067.06 = 453.30 : x
  2. Step 2: Convert to fraction form
    1,378.02/2,067.06 = 453.30/x
  3. Step 3: Cross multiply
    1,378.02x = 2,067.06 × 453.30
  4. Step 4: Simplify right side
    1,378.02x = 936,998.30
  5. Step 5: Solve for x
    x = 936,998.30/1,378.02
  6. Step 6: Final answer
    x = 679.96

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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.