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Finding the Fourth Proportional to 456.10, 629.46 and 281.44

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Solution

The fourth proportional to 456.10, 629.46 and 281.44 is: 388.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.10 : 629.46 = 281.44 : x
  2. Step 2: Convert to fraction form
    456.10/629.46 = 281.44/x
  3. Step 3: Cross multiply
    456.10x = 629.46 × 281.44
  4. Step 4: Simplify right side
    456.10x = 177,153.65
  5. Step 5: Solve for x
    x = 177,153.65/456.10
  6. Step 6: Final answer
    x = 388.41

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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.