Finding the Fourth Proportional to 290.08, 400.26 and 165.70
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Solution
The fourth proportional to 290.08, 400.26 and 165.70 is: 228.64
Step by Step Solution
- Step 1: Write the proportion equation
290.08 : 400.26 = 165.70 : x - Step 2: Convert to fraction form
290.08/400.26 = 165.70/x - Step 3: Cross multiply
290.08x = 400.26 × 165.70 - Step 4: Simplify right side
290.08x = 66,323.08 - Step 5: Solve for x
x = 66,323.08/290.08 - Step 6: Final answer
x = 228.64
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.