Finding the Fourth Proportional to 144.77, 217.18 and 42.05
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Solution
The fourth proportional to 144.77, 217.18 and 42.05 is: 63.09
Step by Step Solution
- Step 1: Write the proportion equation
144.77 : 217.18 = 42.05 : x - Step 2: Convert to fraction form
144.77/217.18 = 42.05/x - Step 3: Cross multiply
144.77x = 217.18 × 42.05 - Step 4: Simplify right side
144.77x = 9,132.53 - Step 5: Solve for x
x = 9,132.53/144.77 - Step 6: Final answer
x = 63.09
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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.