Finding the Fourth Proportional to 74.00, 110.89 and 30.62
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Solution
The fourth proportional to 74.00, 110.89 and 30.62 is: 45.89
Step by Step Solution
- Step 1: Write the proportion equation
74.00 : 110.89 = 30.62 : x - Step 2: Convert to fraction form
74.00/110.89 = 30.62/x - Step 3: Cross multiply
74.00x = 110.89 × 30.62 - Step 4: Simplify right side
74.00x = 3,395.30 - Step 5: Solve for x
x = 3,395.30/74.00 - Step 6: Final answer
x = 45.89
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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.