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Finding the Fourth Proportional to 474.64, 654.69 and 327.34

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Solution

The fourth proportional to 474.64, 654.69 and 327.34 is: 451.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.64 : 654.69 = 327.34 : x
  2. Step 2: Convert to fraction form
    474.64/654.69 = 327.34/x
  3. Step 3: Cross multiply
    474.64x = 654.69 × 327.34
  4. Step 4: Simplify right side
    474.64x = 214,306.22
  5. Step 5: Solve for x
    x = 214,306.22/474.64
  6. Step 6: Final answer
    x = 451.51

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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.