Finding the Fourth Proportional to 291.97, 437.97 and 75.55
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Solution
The fourth proportional to 291.97, 437.97 and 75.55 is: 113.33
Step by Step Solution
- Step 1: Write the proportion equation
291.97 : 437.97 = 75.55 : x - Step 2: Convert to fraction form
291.97/437.97 = 75.55/x - Step 3: Cross multiply
291.97x = 437.97 × 75.55 - Step 4: Simplify right side
291.97x = 33,088.99 - Step 5: Solve for x
x = 33,088.99/291.97 - Step 6: Final answer
x = 113.33
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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.