Finding the Fourth Proportional to 318.65, 477.97 and 135.99
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Solution
The fourth proportional to 318.65, 477.97 and 135.99 is: 203.99
Step by Step Solution
- Step 1: Write the proportion equation
318.65 : 477.97 = 135.99 : x - Step 2: Convert to fraction form
318.65/477.97 = 135.99/x - Step 3: Cross multiply
318.65x = 477.97 × 135.99 - Step 4: Simplify right side
318.65x = 64,998.80 - Step 5: Solve for x
x = 64,998.80/318.65 - Step 6: Final answer
x = 203.99
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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.