Finding the Fourth Proportional to 217.15, 325.73 and 135.88
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Solution
The fourth proportional to 217.15, 325.73 and 135.88 is: 203.82
Step by Step Solution
- Step 1: Write the proportion equation
217.15 : 325.73 = 135.88 : x - Step 2: Convert to fraction form
217.15/325.73 = 135.88/x - Step 3: Cross multiply
217.15x = 325.73 × 135.88 - Step 4: Simplify right side
217.15x = 44,260.19 - Step 5: Solve for x
x = 44,260.19/217.15 - Step 6: Final answer
x = 203.82
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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.