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Finding the Fourth Proportional to 574.08, 859.56 and 400.20

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Solution

The fourth proportional to 574.08, 859.56 and 400.20 is: 599.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.08 : 859.56 = 400.20 : x
  2. Step 2: Convert to fraction form
    574.08/859.56 = 400.20/x
  3. Step 3: Cross multiply
    574.08x = 859.56 × 400.20
  4. Step 4: Simplify right side
    574.08x = 343,995.91
  5. Step 5: Solve for x
    x = 343,995.91/574.08
  6. Step 6: Final answer
    x = 599.21

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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.