This document discusses various types of financial ratios used in analyzing companies. It describes ratios that measure liquidity, debt, profitability, activity/efficiency, and market performance. Liquidity ratios indicate a company's ability to pay short-term debts, debt ratios measure financial leverage, and profitability ratios evaluate how efficiently assets are converted into net income. Activity/efficiency ratios assess asset utilization and turnover. Market ratios reflect investor perceptions of growth potential. Limitations of ratio analysis include difficulties in industry comparisons and the risk of distortions from accounting differences or inflation.