pro ra·ta
adjective/ˌprəʊ ˈrɑːtə/
/ˌprəʊ ˈrɑːtə/
(from Latin, formal)- (of a payment or share of something) calculated according to how much of something has been used, the amount of work done, etc.
按比例的；成比例的；相应的 - If costs go up, there will be a pro rata increase in prices.
如果成本增加，价格就会相应上涨。 - Leave entitlement is calculated on a pro rata basis, according to length of service.
可享有的假期是根据服务期按比例计算的。
Word Originlate 16th cent.: Latin, literally ‘according to the rate’. - If costs go up, there will be a pro rata increase in prices.