Finding the Fourth Proportional to 101.36, 151.58 and 76.99
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Solution
The fourth proportional to 101.36, 151.58 and 76.99 is: 115.14
Step by Step Solution
- Step 1: Write the proportion equation
101.36 : 151.58 = 76.99 : x - Step 2: Convert to fraction form
101.36/151.58 = 76.99/x - Step 3: Cross multiply
101.36x = 151.58 × 76.99 - Step 4: Simplify right side
101.36x = 11,670.14 - Step 5: Solve for x
x = 11,670.14/101.36 - Step 6: Final answer
x = 115.14
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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.