Finding the Fourth Proportional to 442.99, 664.49 and 430.84
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Solution
The fourth proportional to 442.99, 664.49 and 430.84 is: 646.26
Step by Step Solution
- Step 1: Write the proportion equation
442.99 : 664.49 = 430.84 : x - Step 2: Convert to fraction form
442.99/664.49 = 430.84/x - Step 3: Cross multiply
442.99x = 664.49 × 430.84 - Step 4: Simplify right side
442.99x = 286,288.87 - Step 5: Solve for x
x = 286,288.87/442.99 - Step 6: Final answer
x = 646.26
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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.