Finding the Fourth Proportional to 73.26, 109.26 and 69.12
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Solution
The fourth proportional to 73.26, 109.26 and 69.12 is: 103.09
Step by Step Solution
- Step 1: Write the proportion equation
73.26 : 109.26 = 69.12 : x - Step 2: Convert to fraction form
73.26/109.26 = 69.12/x - Step 3: Cross multiply
73.26x = 109.26 × 69.12 - Step 4: Simplify right side
73.26x = 7,552.05 - Step 5: Solve for x
x = 7,552.05/73.26 - Step 6: Final answer
x = 103.09
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.