Finding the Fourth Proportional to 235.45, 352.40 and 212.99
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Solution
The fourth proportional to 235.45, 352.40 and 212.99 is: 318.79
Step by Step Solution
- Step 1: Write the proportion equation
235.45 : 352.40 = 212.99 : x - Step 2: Convert to fraction form
235.45/352.40 = 212.99/x - Step 3: Cross multiply
235.45x = 352.40 × 212.99 - Step 4: Simplify right side
235.45x = 75,057.68 - Step 5: Solve for x
x = 75,057.68/235.45 - Step 6: Final answer
x = 318.79
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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.