Finding the Fourth Proportional to 423.99, 585.09 and 258.21
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Solution
The fourth proportional to 423.99, 585.09 and 258.21 is: 356.32
Step by Step Solution
- Step 1: Write the proportion equation
423.99 : 585.09 = 258.21 : x - Step 2: Convert to fraction form
423.99/585.09 = 258.21/x - Step 3: Cross multiply
423.99x = 585.09 × 258.21 - Step 4: Simplify right side
423.99x = 151,076.09 - Step 5: Solve for x
x = 151,076.09/423.99 - Step 6: Final answer
x = 356.32
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.