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Finding the Fourth Proportional to 1,838.19, 2,757.30 and 539.64

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Solution

The fourth proportional to 1,838.19, 2,757.30 and 539.64 is: 809.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.19 : 2,757.30 = 539.64 : x
  2. Step 2: Convert to fraction form
    1,838.19/2,757.30 = 539.64/x
  3. Step 3: Cross multiply
    1,838.19x = 2,757.30 × 539.64
  4. Step 4: Simplify right side
    1,838.19x = 1,487,949.37
  5. Step 5: Solve for x
    x = 1,487,949.37/1,838.19
  6. Step 6: Final answer
    x = 809.46

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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.