Finding the Fourth Proportional to 439.24, 657.42 and 330.76
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Solution
The fourth proportional to 439.24, 657.42 and 330.76 is: 495.06
Step by Step Solution
- Step 1: Write the proportion equation
439.24 : 657.42 = 330.76 : x - Step 2: Convert to fraction form
439.24/657.42 = 330.76/x - Step 3: Cross multiply
439.24x = 657.42 × 330.76 - Step 4: Simplify right side
439.24x = 217,448.24 - Step 5: Solve for x
x = 217,448.24/439.24 - Step 6: Final answer
x = 495.06
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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.