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Finding the Fourth Proportional to 1,338.98, 2,008.47 and 365.23

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Solution

The fourth proportional to 1,338.98, 2,008.47 and 365.23 is: 547.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,338.98 : 2,008.47 = 365.23 : x
  2. Step 2: Convert to fraction form
    1,338.98/2,008.47 = 365.23/x
  3. Step 3: Cross multiply
    1,338.98x = 2,008.47 × 365.23
  4. Step 4: Simplify right side
    1,338.98x = 733,549.85
  5. Step 5: Solve for x
    x = 733,549.85/1,338.98
  6. Step 6: Final answer
    x = 547.84

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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.