Finding the Fourth Proportional to 310.93, 430.99 and 305.76
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Solution
The fourth proportional to 310.93, 430.99 and 305.76 is: 423.82
Step by Step Solution
- Step 1: Write the proportion equation
310.93 : 430.99 = 305.76 : x - Step 2: Convert to fraction form
310.93/430.99 = 305.76/x - Step 3: Cross multiply
310.93x = 430.99 × 305.76 - Step 4: Simplify right side
310.93x = 131,779.50 - Step 5: Solve for x
x = 131,779.50/310.93 - Step 6: Final answer
x = 423.82
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Why These Related Problems?
These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.