Finding the Fourth Proportional to 221.76, 333.09 and 170.21
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Solution
The fourth proportional to 221.76, 333.09 and 170.21 is: 255.66
Step by Step Solution
- Step 1: Write the proportion equation
221.76 : 333.09 = 170.21 : x - Step 2: Convert to fraction form
221.76/333.09 = 170.21/x - Step 3: Cross multiply
221.76x = 333.09 × 170.21 - Step 4: Simplify right side
221.76x = 56,696.08 - Step 5: Solve for x
x = 56,696.08/221.76 - Step 6: Final answer
x = 255.66
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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.