Finding the Fourth Proportional to 347.36, 478.71 and 284.99
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Solution
The fourth proportional to 347.36, 478.71 and 284.99 is: 392.75
Step by Step Solution
- Step 1: Write the proportion equation
347.36 : 478.71 = 284.99 : x - Step 2: Convert to fraction form
347.36/478.71 = 284.99/x - Step 3: Cross multiply
347.36x = 478.71 × 284.99 - Step 4: Simplify right side
347.36x = 136,425.17 - Step 5: Solve for x
x = 136,425.17/347.36 - Step 6: Final answer
x = 392.75
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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.