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Finding the Fourth Proportional to 454.02, 625.44 and 329.31

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Solution

The fourth proportional to 454.02, 625.44 and 329.31 is: 453.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.02 : 625.44 = 329.31 : x
  2. Step 2: Convert to fraction form
    454.02/625.44 = 329.31/x
  3. Step 3: Cross multiply
    454.02x = 625.44 × 329.31
  4. Step 4: Simplify right side
    454.02x = 205,963.65
  5. Step 5: Solve for x
    x = 205,963.65/454.02
  6. Step 6: Final answer
    x = 453.64

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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.