Finding the Fourth Proportional to 221.63, 305.91 and 163.58
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Solution
The fourth proportional to 221.63, 305.91 and 163.58 is: 225.78
Step by Step Solution
- Step 1: Write the proportion equation
221.63 : 305.91 = 163.58 : x - Step 2: Convert to fraction form
221.63/305.91 = 163.58/x - Step 3: Cross multiply
221.63x = 305.91 × 163.58 - Step 4: Simplify right side
221.63x = 50,039.23 - Step 5: Solve for x
x = 50,039.23/221.63 - Step 6: Final answer
x = 225.78
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.