Finding the Fourth Proportional to 427.88, 644.33 and 306.99
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Solution
The fourth proportional to 427.88, 644.33 and 306.99 is: 462.28
Step by Step Solution
- Step 1: Write the proportion equation
427.88 : 644.33 = 306.99 : x - Step 2: Convert to fraction form
427.88/644.33 = 306.99/x - Step 3: Cross multiply
427.88x = 644.33 × 306.99 - Step 4: Simplify right side
427.88x = 197,802.77 - Step 5: Solve for x
x = 197,802.77/427.88 - Step 6: Final answer
x = 462.28
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These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.