Finding the Fourth Proportional to 120.12, 180.23 and 59.31
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Solution
The fourth proportional to 120.12, 180.23 and 59.31 is: 88.99
Step by Step Solution
- Step 1: Write the proportion equation
120.12 : 180.23 = 59.31 : x - Step 2: Convert to fraction form
120.12/180.23 = 59.31/x - Step 3: Cross multiply
120.12x = 180.23 × 59.31 - Step 4: Simplify right side
120.12x = 10,689.44 - Step 5: Solve for x
x = 10,689.44/120.12 - Step 6: Final answer
x = 88.99
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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.