Finding the Fourth Proportional to 240.78, 332.19 and 239.70
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Solution
The fourth proportional to 240.78, 332.19 and 239.70 is: 330.70
Step by Step Solution
- Step 1: Write the proportion equation
240.78 : 332.19 = 239.70 : x - Step 2: Convert to fraction form
240.78/332.19 = 239.70/x - Step 3: Cross multiply
240.78x = 332.19 × 239.70 - Step 4: Simplify right side
240.78x = 79,625.94 - Step 5: Solve for x
x = 79,625.94/240.78 - Step 6: Final answer
x = 330.70
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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.