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Finding the Fourth Proportional to 456.03, 629.37 and 281.25

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Solution

The fourth proportional to 456.03, 629.37 and 281.25 is: 388.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    456.03 : 629.37 = 281.25 : x
  2. Step 2: Convert to fraction form
    456.03/629.37 = 281.25/x
  3. Step 3: Cross multiply
    456.03x = 629.37 × 281.25
  4. Step 4: Simplify right side
    456.03x = 177,010.31
  5. Step 5: Solve for x
    x = 177,010.31/456.03
  6. Step 6: Final answer
    x = 388.15

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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.