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Finding the Fourth Proportional to 453.49, 625.98 and 355.27

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Solution

The fourth proportional to 453.49, 625.98 and 355.27 is: 490.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.49 : 625.98 = 355.27 : x
  2. Step 2: Convert to fraction form
    453.49/625.98 = 355.27/x
  3. Step 3: Cross multiply
    453.49x = 625.98 × 355.27
  4. Step 4: Simplify right side
    453.49x = 222,391.91
  5. Step 5: Solve for x
    x = 222,391.91/453.49
  6. Step 6: Final answer
    x = 490.40

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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.