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Finding the Fourth Proportional to 1,367.34, 2,051 and 393.44

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Solution

The fourth proportional to 1,367.34, 2,051 and 393.44 is: 590.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,367.34 : 2,051 = 393.44 : x
  2. Step 2: Convert to fraction form
    1,367.34/2,051 = 393.44/x
  3. Step 3: Cross multiply
    1,367.34x = 2,051 × 393.44
  4. Step 4: Simplify right side
    1,367.34x = 806,945.44
  5. Step 5: Solve for x
    x = 806,945.44/1,367.34
  6. Step 6: Final answer
    x = 590.16

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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.