DUBAI, Feb 4 (Reuters) - Mashreq, Dubai's third-biggest bank by assets, said on Thursday its board had proposed a 40 percent cash dividend for 2015.

The payout would be the same as the proposed cash dividend for the previous year.

The bank last week posted a 13.7 percent fall in fourth-quarter net profit.

($1 = 3.6726 UAE dirham)

(Reporting By Tom Arnold; editing by Matt Smith) ((Tom.Arnold@thomsonreuters.com; +97144536265; Reuters Messaging: tom.arnold.thomsonreuters.com@reuters.net))