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Finding the Fourth Proportional to 495.88, 743.28 and 221.68

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Solution

The fourth proportional to 495.88, 743.28 and 221.68 is: 332.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.88 : 743.28 = 221.68 : x
  2. Step 2: Convert to fraction form
    495.88/743.28 = 221.68/x
  3. Step 3: Cross multiply
    495.88x = 743.28 × 221.68
  4. Step 4: Simplify right side
    495.88x = 164,770.31
  5. Step 5: Solve for x
    x = 164,770.31/495.88
  6. Step 6: Final answer
    x = 332.28

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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.