Finding the Fourth Proportional to 155.70, 214.44 and 126.54
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Solution
The fourth proportional to 155.70, 214.44 and 126.54 is: 174.28
Step by Step Solution
- Step 1: Write the proportion equation
155.70 : 214.44 = 126.54 : x - Step 2: Convert to fraction form
155.70/214.44 = 126.54/x - Step 3: Cross multiply
155.70x = 214.44 × 126.54 - Step 4: Simplify right side
155.70x = 27,135.24 - Step 5: Solve for x
x = 27,135.24/155.70 - Step 6: Final answer
x = 174.28
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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.