Finding the Fourth Proportional to 318.42, 478.13 and 302.99
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Solution
The fourth proportional to 318.42, 478.13 and 302.99 is: 454.95
Step by Step Solution
- Step 1: Write the proportion equation
318.42 : 478.13 = 302.99 : x - Step 2: Convert to fraction form
318.42/478.13 = 302.99/x - Step 3: Cross multiply
318.42x = 478.13 × 302.99 - Step 4: Simplify right side
318.42x = 144,864.70 - Step 5: Solve for x
x = 144,864.70/318.42 - Step 6: Final answer
x = 454.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.