Finding the Fourth Proportional to 243.11, 365.21 and 146.99
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Solution
The fourth proportional to 243.11, 365.21 and 146.99 is: 220.81
Step by Step Solution
- Step 1: Write the proportion equation
243.11 : 365.21 = 146.99 : x - Step 2: Convert to fraction form
243.11/365.21 = 146.99/x - Step 3: Cross multiply
243.11x = 365.21 × 146.99 - Step 4: Simplify right side
243.11x = 53,682.22 - Step 5: Solve for x
x = 53,682.22/243.11 - Step 6: Final answer
x = 220.81
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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.