Finding the Fourth Proportional to 420.93, 630.99 and 160.74
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Solution
The fourth proportional to 420.93, 630.99 and 160.74 is: 240.96
Step by Step Solution
- Step 1: Write the proportion equation
420.93 : 630.99 = 160.74 : x - Step 2: Convert to fraction form
420.93/630.99 = 160.74/x - Step 3: Cross multiply
420.93x = 630.99 × 160.74 - Step 4: Simplify right side
420.93x = 101,425.33 - Step 5: Solve for x
x = 101,425.33/420.93 - Step 6: Final answer
x = 240.96
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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.