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Finding the Fourth Proportional to 999.28, 1,499.04 and 268.87

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Solution

The fourth proportional to 999.28, 1,499.04 and 268.87 is: 403.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.28 : 1,499.04 = 268.87 : x
  2. Step 2: Convert to fraction form
    999.28/1,499.04 = 268.87/x
  3. Step 3: Cross multiply
    999.28x = 1,499.04 × 268.87
  4. Step 4: Simplify right side
    999.28x = 403,046.88
  5. Step 5: Solve for x
    x = 403,046.88/999.28
  6. Step 6: Final answer
    x = 403.34

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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.