Finding the Fourth Proportional to 430.61, 644.99 and 400.64
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Solution
The fourth proportional to 430.61, 644.99 and 400.64 is: 600.09
Step by Step Solution
- Step 1: Write the proportion equation
430.61 : 644.99 = 400.64 : x - Step 2: Convert to fraction form
430.61/644.99 = 400.64/x - Step 3: Cross multiply
430.61x = 644.99 × 400.64 - Step 4: Simplify right side
430.61x = 258,403.57 - Step 5: Solve for x
x = 258,403.57/430.61 - Step 6: Final answer
x = 600.09
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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.