Finding the Fourth Proportional to 71.26, 106.98 and 67.99
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Solution
The fourth proportional to 71.26, 106.98 and 67.99 is: 102.07
Step by Step Solution
- Step 1: Write the proportion equation
71.26 : 106.98 = 67.99 : x - Step 2: Convert to fraction form
71.26/106.98 = 67.99/x - Step 3: Cross multiply
71.26x = 106.98 × 67.99 - Step 4: Simplify right side
71.26x = 7,272.70 - Step 5: Solve for x
x = 7,272.70/71.26 - Step 6: Final answer
x = 102.07
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.