Finding the Fourth Proportional to 315, 471.98 and 131.99
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Solution
The fourth proportional to 315, 471.98 and 131.99 is: 197.76
Step by Step Solution
- Step 1: Write the proportion equation
315 : 471.98 = 131.99 : x - Step 2: Convert to fraction form
315/471.98 = 131.99/x - Step 3: Cross multiply
315x = 471.98 × 131.99 - Step 4: Simplify right side
315x = 62,293.62 - Step 5: Solve for x
x = 62,293.62/315 - Step 6: Final answer
x = 197.76
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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.