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Finding the Fourth Proportional to 453.40, 628.61 and 444.49

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Solution

The fourth proportional to 453.40, 628.61 and 444.49 is: 616.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.40 : 628.61 = 444.49 : x
  2. Step 2: Convert to fraction form
    453.40/628.61 = 444.49/x
  3. Step 3: Cross multiply
    453.40x = 628.61 × 444.49
  4. Step 4: Simplify right side
    453.40x = 279,409.57
  5. Step 5: Solve for x
    x = 279,409.57/453.40
  6. Step 6: Final answer
    x = 616.26

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.