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Finding the Fourth Proportional to 536.20, 804 and 261.76

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Solution

The fourth proportional to 536.20, 804 and 261.76 is: 392.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.20 : 804 = 261.76 : x
  2. Step 2: Convert to fraction form
    536.20/804 = 261.76/x
  3. Step 3: Cross multiply
    536.20x = 804 × 261.76
  4. Step 4: Simplify right side
    536.20x = 210,455.04
  5. Step 5: Solve for x
    x = 210,455.04/536.20
  6. Step 6: Final answer
    x = 392.49

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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.