Finding the Fourth Proportional to 402.78, 555.84 and 247.50
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Solution
The fourth proportional to 402.78, 555.84 and 247.50 is: 341.55
Step by Step Solution
- Step 1: Write the proportion equation
402.78 : 555.84 = 247.50 : x - Step 2: Convert to fraction form
402.78/555.84 = 247.50/x - Step 3: Cross multiply
402.78x = 555.84 × 247.50 - Step 4: Simplify right side
402.78x = 137,570.40 - Step 5: Solve for x
x = 137,570.40/402.78 - Step 6: Final answer
x = 341.55
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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.