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Finding the Fourth Proportional to 574.04, 790.79 and 426.42

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Solution

The fourth proportional to 574.04, 790.79 and 426.42 is: 587.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    574.04 : 790.79 = 426.42 : x
  2. Step 2: Convert to fraction form
    574.04/790.79 = 426.42/x
  3. Step 3: Cross multiply
    574.04x = 790.79 × 426.42
  4. Step 4: Simplify right side
    574.04x = 337,206.54
  5. Step 5: Solve for x
    x = 337,206.54/574.04
  6. Step 6: Final answer
    x = 587.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.