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Finding the Fourth Proportional to 553.97, 764.45 and 333.05

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Solution

The fourth proportional to 553.97, 764.45 and 333.05 is: 459.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    553.97 : 764.45 = 333.05 : x
  2. Step 2: Convert to fraction form
    553.97/764.45 = 333.05/x
  3. Step 3: Cross multiply
    553.97x = 764.45 × 333.05
  4. Step 4: Simplify right side
    553.97x = 254,594.59
  5. Step 5: Solve for x
    x = 254,594.59/553.97
  6. Step 6: Final answer
    x = 459.58

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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.