Finding the Fourth Proportional to 99.36, 149.00 and 68.94
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Solution
The fourth proportional to 99.36, 149.00 and 68.94 is: 103.38
Step by Step Solution
- Step 1: Write the proportion equation
99.36 : 149.00 = 68.94 : x - Step 2: Convert to fraction form
99.36/149.00 = 68.94/x - Step 3: Cross multiply
99.36x = 149.00 × 68.94 - Step 4: Simplify right side
99.36x = 10,271.72 - Step 5: Solve for x
x = 10,271.72/99.36 - Step 6: Final answer
x = 103.38
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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.