Finding the Fourth Proportional to 115.05, 158.76 and 65.94
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Solution
The fourth proportional to 115.05, 158.76 and 65.94 is: 90.99
Step by Step Solution
- Step 1: Write the proportion equation
115.05 : 158.76 = 65.94 : x - Step 2: Convert to fraction form
115.05/158.76 = 65.94/x - Step 3: Cross multiply
115.05x = 158.76 × 65.94 - Step 4: Simplify right side
115.05x = 10,468.63 - Step 5: Solve for x
x = 10,468.63/115.05 - Step 6: Final answer
x = 90.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.