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Finding the Fourth Proportional to 322.84, 483.66 and 231.28

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Solution

The fourth proportional to 322.84, 483.66 and 231.28 is: 346.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    322.84 : 483.66 = 231.28 : x
  2. Step 2: Convert to fraction form
    322.84/483.66 = 231.28/x
  3. Step 3: Cross multiply
    322.84x = 483.66 × 231.28
  4. Step 4: Simplify right side
    322.84x = 111,860.88
  5. Step 5: Solve for x
    x = 111,860.88/322.84
  6. Step 6: Final answer
    x = 346.49

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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.