Finding the Fourth Proportional to 217.08, 325.44 and 145.08
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Solution
The fourth proportional to 217.08, 325.44 and 145.08 is: 217.50
Step by Step Solution
- Step 1: Write the proportion equation
217.08 : 325.44 = 145.08 : x - Step 2: Convert to fraction form
217.08/325.44 = 145.08/x - Step 3: Cross multiply
217.08x = 325.44 × 145.08 - Step 4: Simplify right side
217.08x = 47,214.84 - Step 5: Solve for x
x = 47,214.84/217.08 - Step 6: Final answer
x = 217.50
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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.