Finding the Fourth Proportional to 103.68, 155.44 and 57.99
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Solution
The fourth proportional to 103.68, 155.44 and 57.99 is: 86.94
Step by Step Solution
- Step 1: Write the proportion equation
103.68 : 155.44 = 57.99 : x - Step 2: Convert to fraction form
103.68/155.44 = 57.99/x - Step 3: Cross multiply
103.68x = 155.44 × 57.99 - Step 4: Simplify right side
103.68x = 9,013.97 - Step 5: Solve for x
x = 9,013.97/103.68 - Step 6: Final answer
x = 86.94
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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.