Finding the Fourth Proportional to 393.84, 543.18 and 246.19
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Solution
The fourth proportional to 393.84, 543.18 and 246.19 is: 339.54
Step by Step Solution
- Step 1: Write the proportion equation
393.84 : 543.18 = 246.19 : x - Step 2: Convert to fraction form
393.84/543.18 = 246.19/x - Step 3: Cross multiply
393.84x = 543.18 × 246.19 - Step 4: Simplify right side
393.84x = 133,725.48 - Step 5: Solve for x
x = 133,725.48/393.84 - Step 6: Final answer
x = 339.54
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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.