Finding the Fourth Proportional to 217.35, 325.74 and 145.26
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Solution
The fourth proportional to 217.35, 325.74 and 145.26 is: 217.70
Step by Step Solution
- Step 1: Write the proportion equation
217.35 : 325.74 = 145.26 : x - Step 2: Convert to fraction form
217.35/325.74 = 145.26/x - Step 3: Cross multiply
217.35x = 325.74 × 145.26 - Step 4: Simplify right side
217.35x = 47,316.99 - Step 5: Solve for x
x = 47,316.99/217.35 - Step 6: Final answer
x = 217.70
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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.