Home / 1,308.70-1,962.29-528.06

Finding the Fourth Proportional to 1,308.70, 1,962.29 and 528.06

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Solution

The fourth proportional to 1,308.70, 1,962.29 and 528.06 is: 791.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.70 : 1,962.29 = 528.06 : x
  2. Step 2: Convert to fraction form
    1,308.70/1,962.29 = 528.06/x
  3. Step 3: Cross multiply
    1,308.70x = 1,962.29 × 528.06
  4. Step 4: Simplify right side
    1,308.70x = 1,036,215.54
  5. Step 5: Solve for x
    x = 1,036,215.54/1,308.70
  6. Step 6: Final answer
    x = 791.79

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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.