Finding the Fourth Proportional to 203.26, 304.91 and 87.66
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Solution
The fourth proportional to 203.26, 304.91 and 87.66 is: 131.50
Step by Step Solution
- Step 1: Write the proportion equation
203.26 : 304.91 = 87.66 : x - Step 2: Convert to fraction form
203.26/304.91 = 87.66/x - Step 3: Cross multiply
203.26x = 304.91 × 87.66 - Step 4: Simplify right side
203.26x = 26,727.94 - Step 5: Solve for x
x = 26,727.94/203.26 - Step 6: Final answer
x = 131.50
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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.