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Finding the Fourth Proportional to 471.99, 650.65 and 331.66

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Solution

The fourth proportional to 471.99, 650.65 and 331.66 is: 457.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.99 : 650.65 = 331.66 : x
  2. Step 2: Convert to fraction form
    471.99/650.65 = 331.66/x
  3. Step 3: Cross multiply
    471.99x = 650.65 × 331.66
  4. Step 4: Simplify right side
    471.99x = 215,794.58
  5. Step 5: Solve for x
    x = 215,794.58/471.99
  6. Step 6: Final answer
    x = 457.20

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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.