Finding the Fourth Proportional to 72.26, 108.37 and 38.00
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Solution
The fourth proportional to 72.26, 108.37 and 38.00 is: 56.99
Step by Step Solution
- Step 1: Write the proportion equation
72.26 : 108.37 = 38.00 : x - Step 2: Convert to fraction form
72.26/108.37 = 38.00/x - Step 3: Cross multiply
72.26x = 108.37 × 38.00 - Step 4: Simplify right side
72.26x = 4,118.24 - Step 5: Solve for x
x = 4,118.24/72.26 - Step 6: Final answer
x = 56.99
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.