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Finding the Fourth Proportional to 536.20, 739.98 and 300.20

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Solution

The fourth proportional to 536.20, 739.98 and 300.20 is: 414.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.20 : 739.98 = 300.20 : x
  2. Step 2: Convert to fraction form
    536.20/739.98 = 300.20/x
  3. Step 3: Cross multiply
    536.20x = 739.98 × 300.20
  4. Step 4: Simplify right side
    536.20x = 222,138.30
  5. Step 5: Solve for x
    x = 222,138.30/536.20
  6. Step 6: Final answer
    x = 414.28

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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.