Vocabulary

- Proportionality: proporcionalidad

- Percentage: porcentaje

- Ratio: razón

- Proportion: proporción

- 2 is to 3 as 8 is to 12: 2 es a 3 lo que 8 es a 12

- Direct proportionality: proporcionalidad directa

- Inverse proportionality: proporcionalidad inversa

- Magnitude: magnitud

- Rule of three: regla de tres

- Direct rule of three: regla de tres directa

- Inverse rule of three: regla de tres inversa

- Datum/data: dato/s

- % = percent = per cent = out of a hundred: por ciento