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Finding the Fourth Proportional to 458.52, 682.83 and 423.28

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Solution

The fourth proportional to 458.52, 682.83 and 423.28 is: 630.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    458.52 : 682.83 = 423.28 : x
  2. Step 2: Convert to fraction form
    458.52/682.83 = 423.28/x
  3. Step 3: Cross multiply
    458.52x = 682.83 × 423.28
  4. Step 4: Simplify right side
    458.52x = 289,028.28
  5. Step 5: Solve for x
    x = 289,028.28/458.52
  6. Step 6: Final answer
    x = 630.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.