Finding the Fourth Proportional to 212.96, 319.70 and 202.19
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Solution
The fourth proportional to 212.96, 319.70 and 202.19 is: 303.54
Step by Step Solution
- Step 1: Write the proportion equation
212.96 : 319.70 = 202.19 : x - Step 2: Convert to fraction form
212.96/319.70 = 202.19/x - Step 3: Cross multiply
212.96x = 319.70 × 202.19 - Step 4: Simplify right side
212.96x = 64,639.93 - Step 5: Solve for x
x = 64,639.93/212.96 - Step 6: Final answer
x = 303.54
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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.