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Finding the Fourth Proportional to 453.28, 621.88 and 441.12

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Solution

The fourth proportional to 453.28, 621.88 and 441.12 is: 605.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.28 : 621.88 = 441.12 : x
  2. Step 2: Convert to fraction form
    453.28/621.88 = 441.12/x
  3. Step 3: Cross multiply
    453.28x = 621.88 × 441.12
  4. Step 4: Simplify right side
    453.28x = 274,323.71
  5. Step 5: Solve for x
    x = 274,323.71/453.28
  6. Step 6: Final answer
    x = 605.20

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.