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Finding the Fourth Proportional to 536.50, 804.84 and 280

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Solution

The fourth proportional to 536.50, 804.84 and 280 is: 420.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    536.50 : 804.84 = 280 : x
  2. Step 2: Convert to fraction form
    536.50/804.84 = 280/x
  3. Step 3: Cross multiply
    536.50x = 804.84 × 280
  4. Step 4: Simplify right side
    536.50x = 225,355.20
  5. Step 5: Solve for x
    x = 225,355.20/536.50
  6. Step 6: Final answer
    x = 420.05

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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.