Finding the Fourth Proportional to 221.19, 305.26 and 141.49
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Solution
The fourth proportional to 221.19, 305.26 and 141.49 is: 195.27
Step by Step Solution
- Step 1: Write the proportion equation
221.19 : 305.26 = 141.49 : x - Step 2: Convert to fraction form
221.19/305.26 = 141.49/x - Step 3: Cross multiply
221.19x = 305.26 × 141.49 - Step 4: Simplify right side
221.19x = 43,191.24 - Step 5: Solve for x
x = 43,191.24/221.19 - Step 6: Final answer
x = 195.27
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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.