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Finding the Fourth Proportional to 1,026.38, 1,539.64 and 333.20

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Solution

The fourth proportional to 1,026.38, 1,539.64 and 333.20 is: 499.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,026.38 : 1,539.64 = 333.20 : x
  2. Step 2: Convert to fraction form
    1,026.38/1,539.64 = 333.20/x
  3. Step 3: Cross multiply
    1,026.38x = 1,539.64 × 333.20
  4. Step 4: Simplify right side
    1,026.38x = 513,008.05
  5. Step 5: Solve for x
    x = 513,008.05/1,026.38
  6. Step 6: Final answer
    x = 499.82

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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.