Home / 1,308.20-1,961.50-528.56

Finding the Fourth Proportional to 1,308.20, 1,961.50 and 528.56

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Solution

The fourth proportional to 1,308.20, 1,961.50 and 528.56 is: 792.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.20 : 1,961.50 = 528.56 : x
  2. Step 2: Convert to fraction form
    1,308.20/1,961.50 = 528.56/x
  3. Step 3: Cross multiply
    1,308.20x = 1,961.50 × 528.56
  4. Step 4: Simplify right side
    1,308.20x = 1,036,770.44
  5. Step 5: Solve for x
    x = 1,036,770.44/1,308.20
  6. Step 6: Final answer
    x = 792.52

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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.