Finding the Fourth Proportional to 68.20, 102.36 and 27.62
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Solution
The fourth proportional to 68.20, 102.36 and 27.62 is: 41.45
Step by Step Solution
- Step 1: Write the proportion equation
68.20 : 102.36 = 27.62 : x - Step 2: Convert to fraction form
68.20/102.36 = 27.62/x - Step 3: Cross multiply
68.20x = 102.36 × 27.62 - Step 4: Simplify right side
68.20x = 2,827.18 - Step 5: Solve for x
x = 2,827.18/68.20 - Step 6: Final answer
x = 41.45
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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.