Finding the Fourth Proportional to 221.79, 332.73 and 119.18
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Solution
The fourth proportional to 221.79, 332.73 and 119.18 is: 178.79
Step by Step Solution
- Step 1: Write the proportion equation
221.79 : 332.73 = 119.18 : x - Step 2: Convert to fraction form
221.79/332.73 = 119.18/x - Step 3: Cross multiply
221.79x = 332.73 × 119.18 - Step 4: Simplify right side
221.79x = 39,653.10 - Step 5: Solve for x
x = 39,653.10/221.79 - Step 6: Final answer
x = 178.79
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.