Home / 1,288.13-1,932.19-422.44

Finding the Fourth Proportional to 1,288.13, 1,932.19 and 422.44

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Solution

The fourth proportional to 1,288.13, 1,932.19 and 422.44 is: 633.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288.13 : 1,932.19 = 422.44 : x
  2. Step 2: Convert to fraction form
    1,288.13/1,932.19 = 422.44/x
  3. Step 3: Cross multiply
    1,288.13x = 1,932.19 × 422.44
  4. Step 4: Simplify right side
    1,288.13x = 816,228.46
  5. Step 5: Solve for x
    x = 816,228.46/1,288.13
  6. Step 6: Final answer
    x = 633.66

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1.5x scale

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.