Abean sprout grows 3 inches in its first week, 2 inches in its second week, and 1.333 inches in its third week. if the sprout's growth follows this pattern how much will the bean sprout have grown in its fourth week.

If the sprout's gorth follows this pattern, it will continue to decrease in growth by 2/3 each week.
First Week: 3in                 3 x  = 2
Second Week: 2in            2 x  = 1.333
Third Week: 1.333in          1.333 x  = 0.889
Fourth Week: 0.889in

It is 5.8 you add all of the up to equat 180 then solve the equation