Finding the Fourth Proportional to 578.99, 798.99 and 317.00
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Solution
The fourth proportional to 578.99, 798.99 and 317.00 is: 437.45
Step by Step Solution
- Step 1: Write the proportion equation
578.99 : 798.99 = 317.00 : x - Step 2: Convert to fraction form
578.99/798.99 = 317.00/x - Step 3: Cross multiply
578.99x = 798.99 × 317.00 - Step 4: Simplify right side
578.99x = 253,275.84 - Step 5: Solve for x
x = 253,275.84/578.99 - Step 6: Final answer
x = 437.45
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.