Finding the Fourth Proportional to 318.99, 439.74 and 220.98
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Solution
The fourth proportional to 318.99, 439.74 and 220.98 is: 304.63
Step by Step Solution
- Step 1: Write the proportion equation
318.99 : 439.74 = 220.98 : x - Step 2: Convert to fraction form
318.99/439.74 = 220.98/x - Step 3: Cross multiply
318.99x = 439.74 × 220.98 - Step 4: Simplify right side
318.99x = 97,173.75 - Step 5: Solve for x
x = 97,173.75/318.99 - Step 6: Final answer
x = 304.63
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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.