Finding the Fourth Proportional to 80.21, 110.61 and 58.44
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Solution
The fourth proportional to 80.21, 110.61 and 58.44 is: 80.59
Step by Step Solution
- Step 1: Write the proportion equation
80.21 : 110.61 = 58.44 : x - Step 2: Convert to fraction form
80.21/110.61 = 58.44/x - Step 3: Cross multiply
80.21x = 110.61 × 58.44 - Step 4: Simplify right side
80.21x = 6,464.05 - Step 5: Solve for x
x = 6,464.05/80.21 - Step 6: Final answer
x = 80.59
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.