Finding the Fourth Proportional to 311.41, 466.79 and 135.81
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Solution
The fourth proportional to 311.41, 466.79 and 135.81 is: 203.57
Step by Step Solution
- Step 1: Write the proportion equation
311.41 : 466.79 = 135.81 : x - Step 2: Convert to fraction form
311.41/466.79 = 135.81/x - Step 3: Cross multiply
311.41x = 466.79 × 135.81 - Step 4: Simplify right side
311.41x = 63,394.75 - Step 5: Solve for x
x = 63,394.75/311.41 - Step 6: Final answer
x = 203.57
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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.