Home / 1,364.20-2,045.94-390.04

Finding the Fourth Proportional to 1,364.20, 2,045.94 and 390.04

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Solution

The fourth proportional to 1,364.20, 2,045.94 and 390.04 is: 584.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364.20 : 2,045.94 = 390.04 : x
  2. Step 2: Convert to fraction form
    1,364.20/2,045.94 = 390.04/x
  3. Step 3: Cross multiply
    1,364.20x = 2,045.94 × 390.04
  4. Step 4: Simplify right side
    1,364.20x = 797,998.44
  5. Step 5: Solve for x
    x = 797,998.44/1,364.20
  6. Step 6: Final answer
    x = 584.96

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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.