Finding the Fourth Proportional to 437.21, 603.66 and 312.99
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Solution
The fourth proportional to 437.21, 603.66 and 312.99 is: 432.15
Step by Step Solution
- Step 1: Write the proportion equation
437.21 : 603.66 = 312.99 : x - Step 2: Convert to fraction form
437.21/603.66 = 312.99/x - Step 3: Cross multiply
437.21x = 603.66 × 312.99 - Step 4: Simplify right side
437.21x = 188,939.54 - Step 5: Solve for x
x = 188,939.54/437.21 - Step 6: Final answer
x = 432.15
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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.