Finding the Fourth Proportional to 242.29, 363.49 and 79.99
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Solution
The fourth proportional to 242.29, 363.49 and 79.99 is: 120.00
Step by Step Solution
- Step 1: Write the proportion equation
242.29 : 363.49 = 79.99 : x - Step 2: Convert to fraction form
242.29/363.49 = 79.99/x - Step 3: Cross multiply
242.29x = 363.49 × 79.99 - Step 4: Simplify right side
242.29x = 29,074.46 - Step 5: Solve for x
x = 29,074.46/242.29 - Step 6: Final answer
x = 120.00
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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.