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Finding the Fourth Proportional to 471.32, 650.81 and 305.82

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Solution

The fourth proportional to 471.32, 650.81 and 305.82 is: 422.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.32 : 650.81 = 305.82 : x
  2. Step 2: Convert to fraction form
    471.32/650.81 = 305.82/x
  3. Step 3: Cross multiply
    471.32x = 650.81 × 305.82
  4. Step 4: Simplify right side
    471.32x = 199,027.89
  5. Step 5: Solve for x
    x = 199,027.89/471.32
  6. Step 6: Final answer
    x = 422.28

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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.