Finding the Fourth Proportional to 95.18, 142.50 and 74.80
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Solution
The fourth proportional to 95.18, 142.50 and 74.80 is: 111.99
Step by Step Solution
- Step 1: Write the proportion equation
95.18 : 142.50 = 74.80 : x - Step 2: Convert to fraction form
95.18/142.50 = 74.80/x - Step 3: Cross multiply
95.18x = 142.50 × 74.80 - Step 4: Simplify right side
95.18x = 10,659 - Step 5: Solve for x
x = 10,659/95.18 - Step 6: Final answer
x = 111.99
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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.