Finding the Fourth Proportional to 221.44, 332.28 and 84.58
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Solution
The fourth proportional to 221.44, 332.28 and 84.58 is: 126.92
Step by Step Solution
- Step 1: Write the proportion equation
221.44 : 332.28 = 84.58 : x - Step 2: Convert to fraction form
221.44/332.28 = 84.58/x - Step 3: Cross multiply
221.44x = 332.28 × 84.58 - Step 4: Simplify right side
221.44x = 28,104.24 - Step 5: Solve for x
x = 28,104.24/221.44 - Step 6: Final answer
x = 126.92
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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.