Find the fourth proportional to 3a, 6a2 and 2ab2 - Mathematics

Find the fourth proportional to 3a, 6a² and 2ab²

Sum

Let the fourth proportional to 3a, 6a² and 2ab² be x.

`\implies` 3a : 6a² = 2ab² : x

`\implies` 3a × x = 2ab² × 6a²

`\implies` 3a × x = 12a³b²

`\implies` x = 4a²b²

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