Finding the Fourth Proportional to 427.08, 640.67 and 183.68
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Solution
The fourth proportional to 427.08, 640.67 and 183.68 is: 275.53
Step by Step Solution
- Step 1: Write the proportion equation
427.08 : 640.67 = 183.68 : x - Step 2: Convert to fraction form
427.08/640.67 = 183.68/x - Step 3: Cross multiply
427.08x = 640.67 × 183.68 - Step 4: Simplify right side
427.08x = 117,674.14 - Step 5: Solve for x
x = 117,674.14/427.08 - Step 6: Final answer
x = 275.53
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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.