There can be no equivalence. An inch is a measure of length in 1-dimensional space while a square yard is a measure of area in 2-dimensional space. The two measure different things and, according to basic principles of dimensional analysis, any attempt at conversion from one to the other is fundamentally flawed.
If you multiply inches times inches, you get square inches. You can convert that to square yards, but not to yards.
To convert square inches to square yards, divide square inches by 1,296.
900 square inches = 0.694 square yards.
2 square yards = 2592 square inches
There are 5184 inches in 4 square yards
1.53 square yards.
8.98 square yards.
3,240 square inches.
3.25 square yards = 4,212 square inches.
324 square inches
2592 square inches
There are: 1.5 yards times 4.'1' yards = 6.1'6' square yards recurring '6'