Finding the Fourth Proportional to 97.99, 135.35 and 79.79
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Solution
The fourth proportional to 97.99, 135.35 and 79.79 is: 110.22
Step by Step Solution
- Step 1: Write the proportion equation
97.99 : 135.35 = 79.79 : x - Step 2: Convert to fraction form
97.99/135.35 = 79.79/x - Step 3: Cross multiply
97.99x = 135.35 × 79.79 - Step 4: Simplify right side
97.99x = 10,800.11 - Step 5: Solve for x
x = 10,800.11/97.99 - Step 6: Final answer
x = 110.22
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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.