Finding the Fourth Proportional to 79.84, 110.24 and 79.68
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Solution
The fourth proportional to 79.84, 110.24 and 79.68 is: 110.02
Step by Step Solution
- Step 1: Write the proportion equation
79.84 : 110.24 = 79.68 : x - Step 2: Convert to fraction form
79.84/110.24 = 79.68/x - Step 3: Cross multiply
79.84x = 110.24 × 79.68 - Step 4: Simplify right side
79.84x = 8,783.92 - Step 5: Solve for x
x = 8,783.92/79.84 - Step 6: Final answer
x = 110.02
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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.