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Finding the Fourth Proportional to 999.52, 1,499.52 and 306.20

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Solution

The fourth proportional to 999.52, 1,499.52 and 306.20 is: 459.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    999.52 : 1,499.52 = 306.20 : x
  2. Step 2: Convert to fraction form
    999.52/1,499.52 = 306.20/x
  3. Step 3: Cross multiply
    999.52x = 1,499.52 × 306.20
  4. Step 4: Simplify right side
    999.52x = 459,153.02
  5. Step 5: Solve for x
    x = 459,153.02/999.52
  6. Step 6: Final answer
    x = 459.37

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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.