Machine Learning

There are X1, X2, X3 (X1/X2=X3), and X4 independent and Y dependent variables. The data size of such types of observations is around 50. I need to use the Machine Learning approach to get the best models for given data. I have already suggested three models (Polynomial Regression, Artificial Neural Networks (ANN), and Support Vector Regression) and any two other models can be proposed based on observations. Find the attached file for the tables and figures are to be produced using the developed models