CREATE TABLE table_31257 ("Rank by average" FLOAT, "Place" FLOAT, "Couple" TEXT, "Total points" TEXT, "Number of dances" FLOAT, "Average" TEXT)

How many times is the rank by average 4?
SELECT COUNT("Place") FROM table_31257 WHERE "Rank by average" = '4'
SELECT COUNT("Place") FROM "table_31257" WHERE "Rank by average" = '4'