Intend is a synonym of Think. Think is a synonym of Conceive. 
Ratio is similar to Proportion. Proportion is etymologically related to Portion. Portion is related to Size. 
Intend <--Synonym--> Think <--Synonym--> Conceive 
Ratio <--SimilarTo--> Proportion --EtymologicallyRelatedTo--> Portion <--RelatedTo--> Size 