Finding the Fourth Proportional to 403.11, 555.93 and 315.63
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Solution
The fourth proportional to 403.11, 555.93 and 315.63 is: 435.29
Step by Step Solution
- Step 1: Write the proportion equation
403.11 : 555.93 = 315.63 : x - Step 2: Convert to fraction form
403.11/555.93 = 315.63/x - Step 3: Cross multiply
403.11x = 555.93 × 315.63 - Step 4: Simplify right side
403.11x = 175,468.19 - Step 5: Solve for x
x = 175,468.19/403.11 - Step 6: Final answer
x = 435.29
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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.