logan.portfolio_related_ratio.php

<?php

add_filter( 'logan_related_width', 'wazzard_related_width' );
function wazzard_related_width( $w ){
  if ( is_singular('jetpack-portfolio') )
    $w = '500';
  
    return $w;
}

add_filter( 'logan_related_height', 'wazzard_related_height' );
function wazzard_related_height( $h ){
  if ( is_singular('jetpack-portfolio') )
    $h = '500';
  
    return $h;
}