Finding the Fourth Proportional to 98.44, 135.88 and 63.44
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Solution
The fourth proportional to 98.44, 135.88 and 63.44 is: 87.57
Step by Step Solution
- Step 1: Write the proportion equation
98.44 : 135.88 = 63.44 : x - Step 2: Convert to fraction form
98.44/135.88 = 63.44/x - Step 3: Cross multiply
98.44x = 135.88 × 63.44 - Step 4: Simplify right side
98.44x = 8,620.23 - Step 5: Solve for x
x = 8,620.23/98.44 - Step 6: Final answer
x = 87.57
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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.