Finding the Fourth Proportional to 40.22, 60.21 and 30.05
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Solution
The fourth proportional to 40.22, 60.21 and 30.05 is: 44.99
Step by Step Solution
- Step 1: Write the proportion equation
40.22 : 60.21 = 30.05 : x - Step 2: Convert to fraction form
40.22/60.21 = 30.05/x - Step 3: Cross multiply
40.22x = 60.21 × 30.05 - Step 4: Simplify right side
40.22x = 1,809.31 - Step 5: Solve for x
x = 1,809.31/40.22 - Step 6: Final answer
x = 44.99
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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.