Finding the Fourth Proportional to 361.97, 543.05 and 145.70
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Solution
The fourth proportional to 361.97, 543.05 and 145.70 is: 218.58
Step by Step Solution
- Step 1: Write the proportion equation
361.97 : 543.05 = 145.70 : x - Step 2: Convert to fraction form
361.97/543.05 = 145.70/x - Step 3: Cross multiply
361.97x = 543.05 × 145.70 - Step 4: Simplify right side
361.97x = 79,119.67 - Step 5: Solve for x
x = 79,119.67/361.97 - Step 6: Final answer
x = 218.58
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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.