Al Shamal defeated Al Sadd in another match.
Eight teams compete in the event at Jiangmen Sports Center Gymnasium, China from January 7 to 12 for a lone ticket for Tokyo Olympics.
Rayyan coach Carlos Eduardo Schwank was happy with the win but wanted the team to maintain the momentum.
In their final placement match, Qatar defeated Kazakhstan to finish ninth.
Qatar had failed to progress into the last eight but they were impressive on Tuesday to secure deserving victory.
The win helped Qatar take third place in Group A.
India upset Kazakhstan in a Pool C match.
Qatar lost to India in a friendly match at Qatar Volleyball Association Hall on Monday.
The team is preparing for the Asian Championship to be held in Tehran, Iran, from September 11 to 22.
The Asian Men's Under-23 Volleyball Championship is scheduled to be held in Myanmar in August.
Kamil, Deroo star as Rayyan defeat Police in four sets in the final.
The Lions will take on Police in the title clash.
Al Rayyan beat Al Arabi in the semifinal first leg while Police blank Al Ahli
The scintillating win was sweet revenge for the Qataris, who had lost to the Indians in the group stage.
Marcus Costa was the top scorer for Al Rayyan, contributing 17 points.