Learn how the reserves-to-production ratio estimates the lifespan of natural resources. Discover its role in predicting ...

The Golden Ratio (GR), often denoted by the Greek letter phi (Φ), is a mathematical ratio commonly found in nature, art, and architecture. This irrational number, approximately equal to 1.618, has ...

Back in 1855, German psychologist Adolf Zeising published a book with a ridiculously long title called: A New Theory of the proportions of the human body, developed from a basic morphological law ...

The price-earnings ratio is the second major valuation ratio profiled in Axel Tracy's book, Ratio Analysis Fundamentals: How 17 Financial Ratios Can Allow You to Analyse Any Business on the Planet.

Financial ratios are relationships determined from a company’s financial information and used for comparison purposes. Examples include such often referred to measures as return on investment (ROI), ...

Dividing into a given ratio. You can use bar models to divide amounts in a given ratio. For example, Isabel and Geraint share their savings of £96 in the ratio 5 to 3. How much money does each person ...

A ratio compares two or more quantities by using parts of a whole. In this bracelet, there are 2 parts red compared to 3 parts blue. The ratio of red beads to blue beads is 2 : 3. This is said aloud ...