Finding the Fourth Proportional to 40.96, 61.49 and 30.09
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Solution
The fourth proportional to 40.96, 61.49 and 30.09 is: 45.17
Step by Step Solution
- Step 1: Write the proportion equation
40.96 : 61.49 = 30.09 : x - Step 2: Convert to fraction form
40.96/61.49 = 30.09/x - Step 3: Cross multiply
40.96x = 61.49 × 30.09 - Step 4: Simplify right side
40.96x = 1,850.23 - Step 5: Solve for x
x = 1,850.23/40.96 - Step 6: Final answer
x = 45.17
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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.