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Finding the Fourth Proportional to 453.98, 626.57 and 279.35

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Solution

The fourth proportional to 453.98, 626.57 and 279.35 is: 385.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.98 : 626.57 = 279.35 : x
  2. Step 2: Convert to fraction form
    453.98/626.57 = 279.35/x
  3. Step 3: Cross multiply
    453.98x = 626.57 × 279.35
  4. Step 4: Simplify right side
    453.98x = 175,027.80
  5. Step 5: Solve for x
    x = 175,027.80/453.98
  6. Step 6: Final answer
    x = 385.55

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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.