Allow adding 2 form fields next to on field to their right/left

It would be great if we could have the ability to add 2 slim form fields to one that is quite tall.

For example I would love to be able to add two drop down lists on tp of each other and then to the right of them both have a single form field that has a list of radio buttons.

This would make the form so much more tidy as currently you can only have one field next to a single field, see attached it just doesn't look right