Finding the Fourth Proportional to 492.15, 679.51 and 344.99
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Solution
The fourth proportional to 492.15, 679.51 and 344.99 is: 476.32
Step by Step Solution
- Step 1: Write the proportion equation
492.15 : 679.51 = 344.99 : x - Step 2: Convert to fraction form
492.15/679.51 = 344.99/x - Step 3: Cross multiply
492.15x = 679.51 × 344.99 - Step 4: Simplify right side
492.15x = 234,420.76 - Step 5: Solve for x
x = 234,420.76/492.15 - Step 6: Final answer
x = 476.32
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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.