Finding the Fourth Proportional to 348.13, 522.21 and 91.63
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Solution
The fourth proportional to 348.13, 522.21 and 91.63 is: 137.45
Step by Step Solution
- Step 1: Write the proportion equation
348.13 : 522.21 = 91.63 : x - Step 2: Convert to fraction form
348.13/522.21 = 91.63/x - Step 3: Cross multiply
348.13x = 522.21 × 91.63 - Step 4: Simplify right side
348.13x = 47,850.10 - Step 5: Solve for x
x = 47,850.10/348.13 - Step 6: Final answer
x = 137.45
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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.