Finding the Fourth Proportional to 96.78, 133.56 and 57.96
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Solution
The fourth proportional to 96.78, 133.56 and 57.96 is: 79.99
Step by Step Solution
- Step 1: Write the proportion equation
96.78 : 133.56 = 57.96 : x - Step 2: Convert to fraction form
96.78/133.56 = 57.96/x - Step 3: Cross multiply
96.78x = 133.56 × 57.96 - Step 4: Simplify right side
96.78x = 7,741.14 - Step 5: Solve for x
x = 7,741.14/96.78 - Step 6: Final answer
x = 79.99
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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.