To find the ratio of balls hit to left field to balls hit to right field, we take the number of balls hit to left field and divide it by the number of balls hit to right field.
From the information provided:
- Balls hit to left field = 7
- Balls hit to right field = 8
Now, we calculate the ratio:
\[ \text{Ratio} = \frac{\text{Balls to Left Field}}{\text{Balls to Right Field}} = \frac{7}{8} \]
Next, we divide 7 by 8:
\[ \frac{7}{8} = 0.875 \]
Now, we round 0.875 to the nearest hundredth:
0.875 rounded to the nearest hundredth is 0.88.
Thus, the ratio of balls hit to left field to balls hit to right field, as a decimal rounded to the nearest hundredth, is:
\[ \boxed{0.88} \]