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Finding the Fourth Proportional to 1,405.37, 2,108.17 and 365.36

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Solution

The fourth proportional to 1,405.37, 2,108.17 and 365.36 is: 548.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.37 : 2,108.17 = 365.36 : x
  2. Step 2: Convert to fraction form
    1,405.37/2,108.17 = 365.36/x
  3. Step 3: Cross multiply
    1,405.37x = 2,108.17 × 365.36
  4. Step 4: Simplify right side
    1,405.37x = 770,240.99
  5. Step 5: Solve for x
    x = 770,240.99/1,405.37
  6. Step 6: Final answer
    x = 548.07

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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.