Finding the Fourth Proportional to 87.11, 130.67 and 22.99
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Solution
The fourth proportional to 87.11, 130.67 and 22.99 is: 34.49
Step by Step Solution
- Step 1: Write the proportion equation
87.11 : 130.67 = 22.99 : x - Step 2: Convert to fraction form
87.11/130.67 = 22.99/x - Step 3: Cross multiply
87.11x = 130.67 × 22.99 - Step 4: Simplify right side
87.11x = 3,004.10 - Step 5: Solve for x
x = 3,004.10/87.11 - Step 6: Final answer
x = 34.49
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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.