Finding the Fourth Proportional to 430.13, 645.26 and 141.63
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Solution
The fourth proportional to 430.13, 645.26 and 141.63 is: 212.47
Step by Step Solution
- Step 1: Write the proportion equation
430.13 : 645.26 = 141.63 : x - Step 2: Convert to fraction form
430.13/645.26 = 141.63/x - Step 3: Cross multiply
430.13x = 645.26 × 141.63 - Step 4: Simplify right side
430.13x = 91,387.47 - Step 5: Solve for x
x = 91,387.47/430.13 - Step 6: Final answer
x = 212.47
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.