Home / 1,268.30-1,901.22-402.41

Finding the Fourth Proportional to 1,268.30, 1,901.22 and 402.41

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Solution

The fourth proportional to 1,268.30, 1,901.22 and 402.41 is: 603.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,268.30 : 1,901.22 = 402.41 : x
  2. Step 2: Convert to fraction form
    1,268.30/1,901.22 = 402.41/x
  3. Step 3: Cross multiply
    1,268.30x = 1,901.22 × 402.41
  4. Step 4: Simplify right side
    1,268.30x = 765,060.43
  5. Step 5: Solve for x
    x = 765,060.43/1,268.30
  6. Step 6: Final answer
    x = 603.22

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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.