Finding the Fourth Proportional to 98.44, 135.74 and 65.63
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Solution
The fourth proportional to 98.44, 135.74 and 65.63 is: 90.50
Step by Step Solution
- Step 1: Write the proportion equation
98.44 : 135.74 = 65.63 : x - Step 2: Convert to fraction form
98.44/135.74 = 65.63/x - Step 3: Cross multiply
98.44x = 135.74 × 65.63 - Step 4: Simplify right side
98.44x = 8,908.62 - Step 5: Solve for x
x = 8,908.62/98.44 - Step 6: Final answer
x = 90.50
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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.