Finding the Fourth Proportional to 28.36, 42.45 and 26.05
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Solution
The fourth proportional to 28.36, 42.45 and 26.05 is: 38.99
Step by Step Solution
- Step 1: Write the proportion equation
28.36 : 42.45 = 26.05 : x - Step 2: Convert to fraction form
28.36/42.45 = 26.05/x - Step 3: Cross multiply
28.36x = 42.45 × 26.05 - Step 4: Simplify right side
28.36x = 1,105.82 - Step 5: Solve for x
x = 1,105.82/28.36 - Step 6: Final answer
x = 38.99
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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.