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Finding the Fourth Proportional to 453.63, 626.37 and 321.39

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Solution

The fourth proportional to 453.63, 626.37 and 321.39 is: 443.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.63 : 626.37 = 321.39 : x
  2. Step 2: Convert to fraction form
    453.63/626.37 = 321.39/x
  3. Step 3: Cross multiply
    453.63x = 626.37 × 321.39
  4. Step 4: Simplify right side
    453.63x = 201,307.00
  5. Step 5: Solve for x
    x = 201,307.00/453.63
  6. Step 6: Final answer
    x = 443.77

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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.