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Finding the Fourth Proportional to 454.14, 626.76 and 279.60

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Solution

The fourth proportional to 454.14, 626.76 and 279.60 is: 385.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.14 : 626.76 = 279.60 : x
  2. Step 2: Convert to fraction form
    454.14/626.76 = 279.60/x
  3. Step 3: Cross multiply
    454.14x = 626.76 × 279.60
  4. Step 4: Simplify right side
    454.14x = 175,242.10
  5. Step 5: Solve for x
    x = 175,242.10/454.14
  6. Step 6: Final answer
    x = 385.88

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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.