Finding the Fourth Proportional to 73.99, 110.99 and 25.90
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Solution
The fourth proportional to 73.99, 110.99 and 25.90 is: 38.85
Step by Step Solution
- Step 1: Write the proportion equation
73.99 : 110.99 = 25.90 : x - Step 2: Convert to fraction form
73.99/110.99 = 25.90/x - Step 3: Cross multiply
73.99x = 110.99 × 25.90 - Step 4: Simplify right side
73.99x = 2,874.64 - Step 5: Solve for x
x = 2,874.64/73.99 - Step 6: Final answer
x = 38.85
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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.