Finding the Fourth Proportional to 343.78, 515.70 and 170.62
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Solution
The fourth proportional to 343.78, 515.70 and 170.62 is: 255.94
Step by Step Solution
- Step 1: Write the proportion equation
343.78 : 515.70 = 170.62 : x - Step 2: Convert to fraction form
343.78/515.70 = 170.62/x - Step 3: Cross multiply
343.78x = 515.70 × 170.62 - Step 4: Simplify right side
343.78x = 87,988.73 - Step 5: Solve for x
x = 87,988.73/343.78 - Step 6: Final answer
x = 255.94
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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.