In reply to MOLINA BECK.

This sounds like a classic discrimination problem. You want to assign the new point to the group (Yes or No) that it is most like, based on prior labeled data. Many discriminant algorithms use the Mahalanobis distance, or you can use logistic regression, which would be my choice. Although you could do it "by hand," you would be better off using a conventional algorithm. If you need help, post your question and sample data to the SAS Support Communities.