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Finding the Fourth Proportional to 1,339.46, 2,009.17 and 365.56

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Solution

The fourth proportional to 1,339.46, 2,009.17 and 365.56 is: 548.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.46 : 2,009.17 = 365.56 : x
  2. Step 2: Convert to fraction form
    1,339.46/2,009.17 = 365.56/x
  3. Step 3: Cross multiply
    1,339.46x = 2,009.17 × 365.56
  4. Step 4: Simplify right side
    1,339.46x = 734,472.19
  5. Step 5: Solve for x
    x = 734,472.19/1,339.46
  6. Step 6: Final answer
    x = 548.33

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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.