Finding the Fourth Proportional to 72.18, 108.27 and 24.09
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Solution
The fourth proportional to 72.18, 108.27 and 24.09 is: 36.14
Step by Step Solution
- Step 1: Write the proportion equation
72.18 : 108.27 = 24.09 : x - Step 2: Convert to fraction form
72.18/108.27 = 24.09/x - Step 3: Cross multiply
72.18x = 108.27 × 24.09 - Step 4: Simplify right side
72.18x = 2,608.22 - Step 5: Solve for x
x = 2,608.22/72.18 - Step 6: Final answer
x = 36.14
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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.