Finding the Fourth Proportional to 402.99, 555.84 and 320.07
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Solution
The fourth proportional to 402.99, 555.84 and 320.07 is: 441.47
Step by Step Solution
- Step 1: Write the proportion equation
402.99 : 555.84 = 320.07 : x - Step 2: Convert to fraction form
402.99/555.84 = 320.07/x - Step 3: Cross multiply
402.99x = 555.84 × 320.07 - Step 4: Simplify right side
402.99x = 177,907.71 - Step 5: Solve for x
x = 177,907.71/402.99 - Step 6: Final answer
x = 441.47
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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.