Finding the Fourth Proportional to 74.21, 110.99 and 73.29
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Solution
The fourth proportional to 74.21, 110.99 and 73.29 is: 109.62
Step by Step Solution
- Step 1: Write the proportion equation
74.21 : 110.99 = 73.29 : x - Step 2: Convert to fraction form
74.21/110.99 = 73.29/x - Step 3: Cross multiply
74.21x = 110.99 × 73.29 - Step 4: Simplify right side
74.21x = 8,134.09 - Step 5: Solve for x
x = 8,134.09/74.21 - Step 6: Final answer
x = 109.62
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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.