Finding the Fourth Proportional to 5.00, 7.50 and 1.99
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Solution
The fourth proportional to 5.00, 7.50 and 1.99 is: 2.99
Step by Step Solution
- Step 1: Write the proportion equation
5.00 : 7.50 = 1.99 : x - Step 2: Convert to fraction form
5.00/7.50 = 1.99/x - Step 3: Cross multiply
5.00x = 7.50 × 1.99 - Step 4: Simplify right side
5.00x = 14.92 - Step 5: Solve for x
x = 14.92/5.00 - Step 6: Final answer
x = 2.99
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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.