Finding the Fourth Proportional to 98.48, 135.99 and 70.94
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Solution
The fourth proportional to 98.48, 135.99 and 70.94 is: 97.96
Step by Step Solution
- Step 1: Write the proportion equation
98.48 : 135.99 = 70.94 : x - Step 2: Convert to fraction form
98.48/135.99 = 70.94/x - Step 3: Cross multiply
98.48x = 135.99 × 70.94 - Step 4: Simplify right side
98.48x = 9,647.13 - Step 5: Solve for x
x = 9,647.13/98.48 - Step 6: Final answer
x = 97.96
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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.