According to a report posted Monday by Strategy Analytics, Android-based devices grabbed 22 percent of the tablet market for the fourth quarter of 2010. Apple’s iPad is well out in first place with 77 percent of the market, but the firm expects Android devices to further erode the iPad’s lead.

[ad#Google Adsense 300×250 in story]Strategy Analytics claims that the Samsung Galaxy Tab is “the main driver” of Android-based devices’ success in the tablet marketplace. Samsung coordinated the release of the seven-inch Tab in dozens of countries towards the end of the year.

Strategy Analytics sees continued growth for Android-based tablets in 2011 with the release of Motorola’s Xoom and other high-profile devices. The company expects that as more Android devices hit the market, media developers in the United States and elsewhere will increasingly support the devices with content.