Finding the Fourth Proportional to 430.73, 646.10 and 170.88
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Solution
The fourth proportional to 430.73, 646.10 and 170.88 is: 256.31
Step by Step Solution
- Step 1: Write the proportion equation
430.73 : 646.10 = 170.88 : x - Step 2: Convert to fraction form
430.73/646.10 = 170.88/x - Step 3: Cross multiply
430.73x = 646.10 × 170.88 - Step 4: Simplify right side
430.73x = 110,403.41 - Step 5: Solve for x
x = 110,403.41/430.73 - Step 6: Final answer
x = 256.31
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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.