Finding the Fourth Proportional to 427.63, 637.07 and 406.99
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Solution
The fourth proportional to 427.63, 637.07 and 406.99 is: 606.32
Step by Step Solution
- Step 1: Write the proportion equation
427.63 : 637.07 = 406.99 : x - Step 2: Convert to fraction form
427.63/637.07 = 406.99/x - Step 3: Cross multiply
427.63x = 637.07 × 406.99 - Step 4: Simplify right side
427.63x = 259,281.12 - Step 5: Solve for x
x = 259,281.12/427.63 - Step 6: Final answer
x = 606.32
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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.