Finding the Fourth Proportional to 221.63, 332.42 and 220.23
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Solution
The fourth proportional to 221.63, 332.42 and 220.23 is: 330.32
Step by Step Solution
- Step 1: Write the proportion equation
221.63 : 332.42 = 220.23 : x - Step 2: Convert to fraction form
221.63/332.42 = 220.23/x - Step 3: Cross multiply
221.63x = 332.42 × 220.23 - Step 4: Simplify right side
221.63x = 73,207.76 - Step 5: Solve for x
x = 73,207.76/221.63 - Step 6: Final answer
x = 330.32
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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.