Finding the Fourth Proportional to 261.84, 361.68 and 199.68
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Solution
The fourth proportional to 261.84, 361.68 and 199.68 is: 275.82
Step by Step Solution
- Step 1: Write the proportion equation
261.84 : 361.68 = 199.68 : x - Step 2: Convert to fraction form
261.84/361.68 = 199.68/x - Step 3: Cross multiply
261.84x = 361.68 × 199.68 - Step 4: Simplify right side
261.84x = 72,220.26 - Step 5: Solve for x
x = 72,220.26/261.84 - Step 6: Final answer
x = 275.82
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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.