Finding the Fourth Proportional to 212.36, 318.36 and 84.08
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Solution
The fourth proportional to 212.36, 318.36 and 84.08 is: 126.05
Step by Step Solution
- Step 1: Write the proportion equation
212.36 : 318.36 = 84.08 : x - Step 2: Convert to fraction form
212.36/318.36 = 84.08/x - Step 3: Cross multiply
212.36x = 318.36 × 84.08 - Step 4: Simplify right side
212.36x = 26,767.71 - Step 5: Solve for x
x = 26,767.71/212.36 - Step 6: Final answer
x = 126.05
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.