Focus on the pronunciation of proportional
English definition of “proportional”
/prəˈpɔːʃənəl/ adjective (also proportionate)
› if two amounts are proportional, they change at the same rate, so that the relationship between them does not change: proportional to sth They introduced an annual property tax proportional to the market value of the property.
directly proportional (to sth) › if two amounts are directly proportional, when one increases, the other increases and when one goes down, the other goes down: CO2 emissions from motor vehicles are directly proportional to the amount of fuel consumed and its carbon content.
inversely proportional (to sth) › if two amounts are inversely proportional, when one increases, the other goes down and when one goes down, the other increases: E-business knowledge is generally inversely proportional to both age and rank in the organisation.