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Finding the Fourth Proportional to 1,338.16, 2,006.92 and 364.34

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Solution

The fourth proportional to 1,338.16, 2,006.92 and 364.34 is: 546.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.16 : 2,006.92 = 364.34 : x
  2. Step 2: Convert to fraction form
    1,338.16/2,006.92 = 364.34/x
  3. Step 3: Cross multiply
    1,338.16x = 2,006.92 × 364.34
  4. Step 4: Simplify right side
    1,338.16x = 731,201.23
  5. Step 5: Solve for x
    x = 731,201.23/1,338.16
  6. Step 6: Final answer
    x = 546.42

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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.