Finding the Fourth Proportional to 389.23, 585.29 and 358.99
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Solution
The fourth proportional to 389.23, 585.29 and 358.99 is: 539.82
Step by Step Solution
- Step 1: Write the proportion equation
389.23 : 585.29 = 358.99 : x - Step 2: Convert to fraction form
389.23/585.29 = 358.99/x - Step 3: Cross multiply
389.23x = 585.29 × 358.99 - Step 4: Simplify right side
389.23x = 210,113.26 - Step 5: Solve for x
x = 210,113.26/389.23 - Step 6: Final answer
x = 539.82
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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.