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Finding the Fourth Proportional to 1,362.12, 2,041.83 and 539.88

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Solution

The fourth proportional to 1,362.12, 2,041.83 and 539.88 is: 809.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.12 : 2,041.83 = 539.88 : x
  2. Step 2: Convert to fraction form
    1,362.12/2,041.83 = 539.88/x
  3. Step 3: Cross multiply
    1,362.12x = 2,041.83 × 539.88
  4. Step 4: Simplify right side
    1,362.12x = 1,102,343.18
  5. Step 5: Solve for x
    x = 1,102,343.18/1,362.12
  6. Step 6: Final answer
    x = 809.28

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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.