Finding the Fourth Proportional to 68.19, 102.21 and 60.60
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Solution
The fourth proportional to 68.19, 102.21 and 60.60 is: 90.83
Step by Step Solution
- Step 1: Write the proportion equation
68.19 : 102.21 = 60.60 : x - Step 2: Convert to fraction form
68.19/102.21 = 60.60/x - Step 3: Cross multiply
68.19x = 102.21 × 60.60 - Step 4: Simplify right side
68.19x = 6,193.93 - Step 5: Solve for x
x = 6,193.93/68.19 - Step 6: Final answer
x = 90.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.