Finding the Fourth Proportional to 339.88, 508.99 and 305.66
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Solution
The fourth proportional to 339.88, 508.99 and 305.66 is: 457.74
Step by Step Solution
- Step 1: Write the proportion equation
339.88 : 508.99 = 305.66 : x - Step 2: Convert to fraction form
339.88/508.99 = 305.66/x - Step 3: Cross multiply
339.88x = 508.99 × 305.66 - Step 4: Simplify right side
339.88x = 155,577.88 - Step 5: Solve for x
x = 155,577.88/339.88 - Step 6: Final answer
x = 457.74
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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.