Finding the Fourth Proportional to 87.41, 131.02 and 56.99
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Solution
The fourth proportional to 87.41, 131.02 and 56.99 is: 85.42
Step by Step Solution
- Step 1: Write the proportion equation
87.41 : 131.02 = 56.99 : x - Step 2: Convert to fraction form
87.41/131.02 = 56.99/x - Step 3: Cross multiply
87.41x = 131.02 × 56.99 - Step 4: Simplify right side
87.41x = 7,466.03 - Step 5: Solve for x
x = 7,466.03/87.41 - Step 6: Final answer
x = 85.42
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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.