Finding the Fourth Proportional to 68.26, 102.35 and 47.99
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Solution
The fourth proportional to 68.26, 102.35 and 47.99 is: 71.95
Step by Step Solution
- Step 1: Write the proportion equation
68.26 : 102.35 = 47.99 : x - Step 2: Convert to fraction form
68.26/102.35 = 47.99/x - Step 3: Cross multiply
68.26x = 102.35 × 47.99 - Step 4: Simplify right side
68.26x = 4,911.20 - Step 5: Solve for x
x = 4,911.20/68.26 - Step 6: Final answer
x = 71.95
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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.