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Finding the Fourth Proportional to 554.28, 764.64 and 333.15

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Solution

The fourth proportional to 554.28, 764.64 and 333.15 is: 459.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    554.28 : 764.64 = 333.15 : x
  2. Step 2: Convert to fraction form
    554.28/764.64 = 333.15/x
  3. Step 3: Cross multiply
    554.28x = 764.64 × 333.15
  4. Step 4: Simplify right side
    554.28x = 254,739.82
  5. Step 5: Solve for x
    x = 254,739.82/554.28
  6. Step 6: Final answer
    x = 459.59

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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.