How do you scale/fit an image?

CI3 Image Manipulation library can resize() or crop() image, but it would be great if it had a method to scale an image like scale()!

I need to scale an image, for example what ever the image size is i would like to resize it to 200x200.

To achieve that i have this code, but it still doesn't resize all the images in 200x200 size again i want to scale the image!

PHP Code:

$img_properties = [
            'image_library'  => 'gd2',
            'source_image'   => $image,
            'create_thumb'   => false,
            'maintain_ratio' => true,
            'width'          => 200,
            'height'         => 200,
            'master_dim'     => 'auto'
        ];
        $this->load->library('image_lib', $img_properties);
        $this->image_lib->resize(); 


What would be the idea in this case?
Thanks and wish you a great day