The perfect fourth has a pitch ratio close to 4:3.

Philip Haigh argues that the discussion in a private meeting of three options to decongest Manchester's Castlefield Corridor has reinforced a perception of 'increasing secrecy' around rail planning.

[…] The 'guayava' (Psidium Guayava, Raddi) is another fruit of recent introduction …

The black clouds threatened heavy rain.