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Finding the Fourth Proportional to 455.26, 628.10 and 372.33

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Solution

The fourth proportional to 455.26, 628.10 and 372.33 is: 513.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    455.26 : 628.10 = 372.33 : x
  2. Step 2: Convert to fraction form
    455.26/628.10 = 372.33/x
  3. Step 3: Cross multiply
    455.26x = 628.10 × 372.33
  4. Step 4: Simplify right side
    455.26x = 233,860.47
  5. Step 5: Solve for x
    x = 233,860.47/455.26
  6. Step 6: Final answer
    x = 513.69

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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.