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Finding the Fourth Proportional to 321.64, 483.54 and 250.36

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Solution

The fourth proportional to 321.64, 483.54 and 250.36 is: 376.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    321.64 : 483.54 = 250.36 : x
  2. Step 2: Convert to fraction form
    321.64/483.54 = 250.36/x
  3. Step 3: Cross multiply
    321.64x = 483.54 × 250.36
  4. Step 4: Simplify right side
    321.64x = 121,059.07
  5. Step 5: Solve for x
    x = 121,059.07/321.64
  6. Step 6: Final answer
    x = 376.38

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.