Finding the Fourth Proportional to 317.99, 438.68 and 186.93
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Solution
The fourth proportional to 317.99, 438.68 and 186.93 is: 257.88
Step by Step Solution
- Step 1: Write the proportion equation
317.99 : 438.68 = 186.93 : x - Step 2: Convert to fraction form
317.99/438.68 = 186.93/x - Step 3: Cross multiply
317.99x = 438.68 × 186.93 - Step 4: Simplify right side
317.99x = 82,002.92 - Step 5: Solve for x
x = 82,002.92/317.99 - Step 6: Final answer
x = 257.88
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.