Finding the Fourth Proportional to 98.30, 135.67 and 58.44
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Solution
The fourth proportional to 98.30, 135.67 and 58.44 is: 80.66
Step by Step Solution
- Step 1: Write the proportion equation
98.30 : 135.67 = 58.44 : x - Step 2: Convert to fraction form
98.30/135.67 = 58.44/x - Step 3: Cross multiply
98.30x = 135.67 × 58.44 - Step 4: Simplify right side
98.30x = 7,928.26 - Step 5: Solve for x
x = 7,928.26/98.30 - Step 6: Final answer
x = 80.66
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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.