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Finding the Fourth Proportional to 928.00, 1,392.04 and 516.82

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Solution

The fourth proportional to 928.00, 1,392.04 and 516.82 is: 775.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    928.00 : 1,392.04 = 516.82 : x
  2. Step 2: Convert to fraction form
    928.00/1,392.04 = 516.82/x
  3. Step 3: Cross multiply
    928.00x = 1,392.04 × 516.82
  4. Step 4: Simplify right side
    928.00x = 719,431.53
  5. Step 5: Solve for x
    x = 719,431.53/928.00
  6. Step 6: Final answer
    x = 775.25

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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.