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Finding the Fourth Proportional to 1,367.22, 2,050.65 and 393.42

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Solution

The fourth proportional to 1,367.22, 2,050.65 and 393.42 is: 590.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.22 : 2,050.65 = 393.42 : x
  2. Step 2: Convert to fraction form
    1,367.22/2,050.65 = 393.42/x
  3. Step 3: Cross multiply
    1,367.22x = 2,050.65 × 393.42
  4. Step 4: Simplify right side
    1,367.22x = 806,766.72
  5. Step 5: Solve for x
    x = 806,766.72/1,367.22
  6. Step 6: Final answer
    x = 590.08

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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.