# Who and what is Fibonacci?

Leonardo Fibonacci (1170 1240) of Pisa, Italy was a thirteenth century mathematician who discovered that there was a relationship with adding numbers together and then the dividing relationship came up with repetitive percentage figures. This was called the Fibonacci summation or series numbers. Simply put, they are an infinite series of numbers that adds each number to the previous. An example is 1,2,3, 5,8,13,21,34,55,89,144, 233, 377, 610, 987 and so on. If you take 1 + 2 you get 3, then if you take 2+ 3 you get 5, and if you take 3 + 5 you get 8 and so on. Fibonacci ratios are numbers derived from the calculations within the Fibonacci series numbers. The most common numbers are .382%, .50%, .618%, .786%, 1.00%, 1.272% and 1.618%. The Golden ratio number is often referred to for the number .618% due to the many coincidences that reoccurs with that number. For example 89=+/- .618 of 144, 144 divided by 233 + .618, .382 + .618 = 1.00, .786 = the square root of .618%. ยง Fibonacci corre