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Finding the Fourth Proportional to 471.63, 650.59 and 331.69

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Solution

The fourth proportional to 471.63, 650.59 and 331.69 is: 457.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.63 : 650.59 = 331.69 : x
  2. Step 2: Convert to fraction form
    471.63/650.59 = 331.69/x
  3. Step 3: Cross multiply
    471.63x = 650.59 × 331.69
  4. Step 4: Simplify right side
    471.63x = 215,794.20
  5. Step 5: Solve for x
    x = 215,794.20/471.63
  6. Step 6: Final answer
    x = 457.55

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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.