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Finding the Fourth Proportional to 453.78, 625.70 and 372.69

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Solution

The fourth proportional to 453.78, 625.70 and 372.69 is: 513.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.78 : 625.70 = 372.69 : x
  2. Step 2: Convert to fraction form
    453.78/625.70 = 372.69/x
  3. Step 3: Cross multiply
    453.78x = 625.70 × 372.69
  4. Step 4: Simplify right side
    453.78x = 233,190.27
  5. Step 5: Solve for x
    x = 233,190.27/453.78
  6. Step 6: Final answer
    x = 513.88

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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.