Answer:
97
Step-by-step explanation:
The average needs to be 90, so the sum of 4 scores would be:
4 * 90 = 360
From the scores of first 3 rounds, the total is:
83 + 88 + 92 = 263
To make atleast 360, the skater needs:
360 - 263 = 97
Since skater made it to next round, the least score of that round would be 97