Finding the Fourth Proportional to 76.99, 106.21 and 44.23
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Solution
The fourth proportional to 76.99, 106.21 and 44.23 is: 61.02
Step by Step Solution
- Step 1: Write the proportion equation
76.99 : 106.21 = 44.23 : x - Step 2: Convert to fraction form
76.99/106.21 = 44.23/x - Step 3: Cross multiply
76.99x = 106.21 × 44.23 - Step 4: Simplify right side
76.99x = 4,697.67 - Step 5: Solve for x
x = 4,697.67/76.99 - Step 6: Final answer
x = 61.02
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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.