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Finding the Fourth Proportional to 576.04, 863.27 and 421.24

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Solution

The fourth proportional to 576.04, 863.27 and 421.24 is: 631.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.04 : 863.27 = 421.24 : x
  2. Step 2: Convert to fraction form
    576.04/863.27 = 421.24/x
  3. Step 3: Cross multiply
    576.04x = 863.27 × 421.24
  4. Step 4: Simplify right side
    576.04x = 363,643.85
  5. Step 5: Solve for x
    x = 363,643.85/576.04
  6. Step 6: Final answer
    x = 631.28

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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.