Finding the Fourth Proportional to 221.06, 305.16 and 163.01
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Solution
The fourth proportional to 221.06, 305.16 and 163.01 is: 225.03
Step by Step Solution
- Step 1: Write the proportion equation
221.06 : 305.16 = 163.01 : x - Step 2: Convert to fraction form
221.06/305.16 = 163.01/x - Step 3: Cross multiply
221.06x = 305.16 × 163.01 - Step 4: Simplify right side
221.06x = 49,744.13 - Step 5: Solve for x
x = 49,744.13/221.06 - Step 6: Final answer
x = 225.03
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.