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Finding the Fourth Proportional to 453.70, 625.89 and 279.01

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Solution

The fourth proportional to 453.70, 625.89 and 279.01 is: 384.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.70 : 625.89 = 279.01 : x
  2. Step 2: Convert to fraction form
    453.70/625.89 = 279.01/x
  3. Step 3: Cross multiply
    453.70x = 625.89 × 279.01
  4. Step 4: Simplify right side
    453.70x = 174,629.57
  5. Step 5: Solve for x
    x = 174,629.57/453.70
  6. Step 6: Final answer
    x = 384.90

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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.