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Finding the Fourth Proportional to 453.26, 625.43 and 256.77

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Solution

The fourth proportional to 453.26, 625.43 and 256.77 is: 354.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.26 : 625.43 = 256.77 : x
  2. Step 2: Convert to fraction form
    453.26/625.43 = 256.77/x
  3. Step 3: Cross multiply
    453.26x = 625.43 × 256.77
  4. Step 4: Simplify right side
    453.26x = 160,591.66
  5. Step 5: Solve for x
    x = 160,591.66/453.26
  6. Step 6: Final answer
    x = 354.30

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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.