Finding the Fourth Proportional to 403.88, 555.95 and 347.99
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Solution
The fourth proportional to 403.88, 555.95 and 347.99 is: 479.01
Step by Step Solution
- Step 1: Write the proportion equation
403.88 : 555.95 = 347.99 : x - Step 2: Convert to fraction form
403.88/555.95 = 347.99/x - Step 3: Cross multiply
403.88x = 555.95 × 347.99 - Step 4: Simplify right side
403.88x = 193,463.30 - Step 5: Solve for x
x = 193,463.30/403.88 - Step 6: Final answer
x = 479.01
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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.