Finding the Fourth Proportional to 319.68, 441.84 and 261.84
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Solution
The fourth proportional to 319.68, 441.84 and 261.84 is: 361.90
Step by Step Solution
- Step 1: Write the proportion equation
319.68 : 441.84 = 261.84 : x - Step 2: Convert to fraction form
319.68/441.84 = 261.84/x - Step 3: Cross multiply
319.68x = 441.84 × 261.84 - Step 4: Simplify right side
319.68x = 115,691.39 - Step 5: Solve for x
x = 115,691.39/319.68 - Step 6: Final answer
x = 361.90
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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.