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Finding the Fourth Proportional to 575.20, 863.04 and 358.72

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Solution

The fourth proportional to 575.20, 863.04 and 358.72 is: 538.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.20 : 863.04 = 358.72 : x
  2. Step 2: Convert to fraction form
    575.20/863.04 = 358.72/x
  3. Step 3: Cross multiply
    575.20x = 863.04 × 358.72
  4. Step 4: Simplify right side
    575.20x = 309,589.71
  5. Step 5: Solve for x
    x = 309,589.71/575.20
  6. Step 6: Final answer
    x = 538.23

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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.