Finding the Fourth Proportional to 242.79, 363.52 and 126.99
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Solution
The fourth proportional to 242.79, 363.52 and 126.99 is: 190.14
Step by Step Solution
- Step 1: Write the proportion equation
242.79 : 363.52 = 126.99 : x - Step 2: Convert to fraction form
242.79/363.52 = 126.99/x - Step 3: Cross multiply
242.79x = 363.52 × 126.99 - Step 4: Simplify right side
242.79x = 46,163.40 - Step 5: Solve for x
x = 46,163.40/242.79 - Step 6: Final answer
x = 190.14
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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.