Finding the Fourth Proportional to 217.14, 325.74 and 145.08
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Solution
The fourth proportional to 217.14, 325.74 and 145.08 is: 217.64
Step by Step Solution
- Step 1: Write the proportion equation
217.14 : 325.74 = 145.08 : x - Step 2: Convert to fraction form
217.14/325.74 = 145.08/x - Step 3: Cross multiply
217.14x = 325.74 × 145.08 - Step 4: Simplify right side
217.14x = 47,258.36 - Step 5: Solve for x
x = 47,258.36/217.14 - Step 6: Final answer
x = 217.64
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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.