Finding the Fourth Proportional to 212.05, 318.07 and 57.99
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Solution
The fourth proportional to 212.05, 318.07 and 57.99 is: 86.98
Step by Step Solution
- Step 1: Write the proportion equation
212.05 : 318.07 = 57.99 : x - Step 2: Convert to fraction form
212.05/318.07 = 57.99/x - Step 3: Cross multiply
212.05x = 318.07 × 57.99 - Step 4: Simplify right side
212.05x = 18,444.73 - Step 5: Solve for x
x = 18,444.73/212.05 - Step 6: Final answer
x = 86.98
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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.