Finding the Fourth Proportional to 79.97, 110.36 and 73.15
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Solution
The fourth proportional to 79.97, 110.36 and 73.15 is: 100.95
Step by Step Solution
- Step 1: Write the proportion equation
79.97 : 110.36 = 73.15 : x - Step 2: Convert to fraction form
79.97/110.36 = 73.15/x - Step 3: Cross multiply
79.97x = 110.36 × 73.15 - Step 4: Simplify right side
79.97x = 8,072.74 - Step 5: Solve for x
x = 8,072.74/79.97 - Step 6: Final answer
x = 100.95
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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.