Home / 1,231.08-1,846.80-409.44

Finding the Fourth Proportional to 1,231.08, 1,846.80 and 409.44

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Solution

The fourth proportional to 1,231.08, 1,846.80 and 409.44 is: 614.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231.08 : 1,846.80 = 409.44 : x
  2. Step 2: Convert to fraction form
    1,231.08/1,846.80 = 409.44/x
  3. Step 3: Cross multiply
    1,231.08x = 1,846.80 × 409.44
  4. Step 4: Simplify right side
    1,231.08x = 756,153.79
  5. Step 5: Solve for x
    x = 756,153.79/1,231.08
  6. Step 6: Final answer
    x = 614.22

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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.