Finding the Fourth Proportional to 242.72, 336.42 and 238.80
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Solution
The fourth proportional to 242.72, 336.42 and 238.80 is: 330.99
Step by Step Solution
- Step 1: Write the proportion equation
242.72 : 336.42 = 238.80 : x - Step 2: Convert to fraction form
242.72/336.42 = 238.80/x - Step 3: Cross multiply
242.72x = 336.42 × 238.80 - Step 4: Simplify right side
242.72x = 80,337.10 - Step 5: Solve for x
x = 80,337.10/242.72 - Step 6: Final answer
x = 330.99
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.