Finding the Fourth Proportional to 98.42, 135.66 and 69.26
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Solution
The fourth proportional to 98.42, 135.66 and 69.26 is: 95.47
Step by Step Solution
- Step 1: Write the proportion equation
98.42 : 135.66 = 69.26 : x - Step 2: Convert to fraction form
98.42/135.66 = 69.26/x - Step 3: Cross multiply
98.42x = 135.66 × 69.26 - Step 4: Simplify right side
98.42x = 9,395.81 - Step 5: Solve for x
x = 9,395.81/98.42 - Step 6: Final answer
x = 95.47
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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.