Finding the Fourth Proportional to 393.93, 591.21 and 162.99
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Solution
The fourth proportional to 393.93, 591.21 and 162.99 is: 244.62
Step by Step Solution
- Step 1: Write the proportion equation
393.93 : 591.21 = 162.99 : x - Step 2: Convert to fraction form
393.93/591.21 = 162.99/x - Step 3: Cross multiply
393.93x = 591.21 × 162.99 - Step 4: Simplify right side
393.93x = 96,361.32 - Step 5: Solve for x
x = 96,361.32/393.93 - Step 6: Final answer
x = 244.62
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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.