Finding the Fourth Proportional to 261.68, 361.26 and 178.76
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Solution
The fourth proportional to 261.68, 361.26 and 178.76 is: 246.79
Step by Step Solution
- Step 1: Write the proportion equation
261.68 : 361.26 = 178.76 : x - Step 2: Convert to fraction form
261.68/361.26 = 178.76/x - Step 3: Cross multiply
261.68x = 361.26 × 178.76 - Step 4: Simplify right side
261.68x = 64,578.84 - Step 5: Solve for x
x = 64,578.84/261.68 - Step 6: Final answer
x = 246.79
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.