Finding the Fourth Proportional to 89.66, 134.47 and 43.99
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Solution
The fourth proportional to 89.66, 134.47 and 43.99 is: 65.98
Step by Step Solution
- Step 1: Write the proportion equation
89.66 : 134.47 = 43.99 : x - Step 2: Convert to fraction form
89.66/134.47 = 43.99/x - Step 3: Cross multiply
89.66x = 134.47 × 43.99 - Step 4: Simplify right side
89.66x = 5,915.45 - Step 5: Solve for x
x = 5,915.45/89.66 - Step 6: Final answer
x = 65.98
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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.