Finding the Fourth Proportional to 115.14, 159.72 and 108.99
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Solution
The fourth proportional to 115.14, 159.72 and 108.99 is: 151.19
Step by Step Solution
- Step 1: Write the proportion equation
115.14 : 159.72 = 108.99 : x - Step 2: Convert to fraction form
115.14/159.72 = 108.99/x - Step 3: Cross multiply
115.14x = 159.72 × 108.99 - Step 4: Simplify right side
115.14x = 17,408.28 - Step 5: Solve for x
x = 17,408.28/115.14 - Step 6: Final answer
x = 151.19
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These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.