The spelling of "pro pound" may seem confusing, but it actually makes perfect sense when broken down phonetically. The first syllable, "pro", is pronounced as /proʊ/, with the "o" sound elongated. The second syllable, "pound", is pronounced as /paʊnd/, with the "ou" sound pronounced like the word "ow". When combined, the word is pronounced /proʊ paʊnd/. The spelling reflects the pronunciation of each individual syllable, making it easier for readers to accurately sound out the word.