Sunday, June 10, 2012

Proportion Analysis versus Dimensional Analysis - A Simple Example


A suspension is labeled to contain 250 mg of amoxicillin per 5 mL of product.  If a patient’s dose is 150 mg, what volume of suspension should the patient receive?


By Proportion Analysis Technique:




By Dimensional Analysis Technique:







Discussion: In simple problem, there is not much different between the work involved in the two analysis techniques.  Dimensional analysis, however, avoids the “cross-multiplication” and the need to solve for the unknown variable of the proportion analysis technique.

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