Finding the Fourth Proportional to 513.18, 769.62 and 147.99
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Solution
The fourth proportional to 513.18, 769.62 and 147.99 is: 221.94
Step by Step Solution
- Step 1: Write the proportion equation
513.18 : 769.62 = 147.99 : x - Step 2: Convert to fraction form
513.18/769.62 = 147.99/x - Step 3: Cross multiply
513.18x = 769.62 × 147.99 - Step 4: Simplify right side
513.18x = 113,896.06 - Step 5: Solve for x
x = 113,896.06/513.18 - Step 6: Final answer
x = 221.94
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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.