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Finding the Fourth Proportional to 1,338.77, 2,008.17 and 364.89

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Solution

The fourth proportional to 1,338.77, 2,008.17 and 364.89 is: 547.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.77 : 2,008.17 = 364.89 : x
  2. Step 2: Convert to fraction form
    1,338.77/2,008.17 = 364.89/x
  3. Step 3: Cross multiply
    1,338.77x = 2,008.17 × 364.89
  4. Step 4: Simplify right side
    1,338.77x = 732,761.15
  5. Step 5: Solve for x
    x = 732,761.15/1,338.77
  6. Step 6: Final answer
    x = 547.34

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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.