Finding the Fourth Proportional to 97.77, 134.87 and 68.79
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Solution
The fourth proportional to 97.77, 134.87 and 68.79 is: 94.89
Step by Step Solution
- Step 1: Write the proportion equation
97.77 : 134.87 = 68.79 : x - Step 2: Convert to fraction form
97.77/134.87 = 68.79/x - Step 3: Cross multiply
97.77x = 134.87 × 68.79 - Step 4: Simplify right side
97.77x = 9,277.36 - Step 5: Solve for x
x = 9,277.36/97.77 - Step 6: Final answer
x = 94.89
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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.