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Finding the Fourth Proportional to 932.16, 1,286.36 and 539.18

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Solution

The fourth proportional to 932.16, 1,286.36 and 539.18 is: 744.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.16 : 1,286.36 = 539.18 : x
  2. Step 2: Convert to fraction form
    932.16/1,286.36 = 539.18/x
  3. Step 3: Cross multiply
    932.16x = 1,286.36 × 539.18
  4. Step 4: Simplify right side
    932.16x = 693,573.15
  5. Step 5: Solve for x
    x = 693,573.15/932.16
  6. Step 6: Final answer
    x = 744.05

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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.