Finding the Fourth Proportional to 243.99, 366.02 and 81.63
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Solution
The fourth proportional to 243.99, 366.02 and 81.63 is: 122.46
Step by Step Solution
- Step 1: Write the proportion equation
243.99 : 366.02 = 81.63 : x - Step 2: Convert to fraction form
243.99/366.02 = 81.63/x - Step 3: Cross multiply
243.99x = 366.02 × 81.63 - Step 4: Simplify right side
243.99x = 29,879.14 - Step 5: Solve for x
x = 29,879.14/243.99 - Step 6: Final answer
x = 122.46
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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.