Finding the Fourth Proportional to 370.91, 511.49 and 287.99
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Solution
The fourth proportional to 370.91, 511.49 and 287.99 is: 397.13
Step by Step Solution
- Step 1: Write the proportion equation
370.91 : 511.49 = 287.99 : x - Step 2: Convert to fraction form
370.91/511.49 = 287.99/x - Step 3: Cross multiply
370.91x = 511.49 × 287.99 - Step 4: Simplify right side
370.91x = 147,301.93 - Step 5: Solve for x
x = 147,301.93/370.91 - Step 6: Final answer
x = 397.13
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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.