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Finding the Fourth Proportional to 932.06, 1,286.39 and 539.30

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Solution

The fourth proportional to 932.06, 1,286.39 and 539.30 is: 744.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.06 : 1,286.39 = 539.30 : x
  2. Step 2: Convert to fraction form
    932.06/1,286.39 = 539.30/x
  3. Step 3: Cross multiply
    932.06x = 1,286.39 × 539.30
  4. Step 4: Simplify right side
    932.06x = 693,741.00
  5. Step 5: Solve for x
    x = 693,741.00/932.06
  6. Step 6: Final answer
    x = 744.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.