Question

Which of the following corrects the error in meaning and usage in the sentence below? The building design lacks a proportion façade. The column width and the front wall are not well-balanced.
Change design to designate.
Change lack to lacking.
Change proportion to proportional.
Change width to wideness.

Answer 1

change width to wideness

Answer 2

The answer is: Change proportion to proportional.  

The noun proportion is a part, share or number in comparison to a whole. The adjective proportional, on the other hand, means corresponding in size or amount.

In this case, the adjective proportional modifies the following noun façade, which is the front face of a building.