In PowerPoint Microsoft Resize the picture to 3" tall.

To resize a picture in Microsoft PowerPoint to be exactly 3 inches tall, you can follow these steps:

1. Insert or select the picture you want to resize on your PowerPoint slide.
2. Click on the picture to select it, which will cause the "Picture Format" or "Format" tab to appear on the Ribbon.
3. While the picture is selected, go to the "Picture Format" or "Format" tab.
4. In the "Size" group on the right side of the tab, you will see the height and width dimensions of the picture.
5. Click on the height field (which might be labeled "H:"), and then manually enter the value "3" to change the height to 3 inches. Make sure your measurements are set to inches. You can check or change this by clicking on "Slide Size" in the "Customize" group, then "Custom Slide Size," and checking the measurements there.
6. Press Enter to apply the new height.

If you want to maintain the aspect ratio (the proportion between the picture's width and height) to avoid distortion, make sure the "Lock aspect ratio" checkbox is checked before you enter the new height. This will automatically adjust the width as you change the height to keep the picture's proportions consistent.

If "Lock aspect ratio" is unchecked, the picture's width will stay the same, and only the height will change, potentially distorting the image.

These instructions are based on the assumption you are using a relatively recent version of PowerPoint. If you are using an older version, some steps might be slightly different.