Home / 1,308.55-1,962.31-528.41

Finding the Fourth Proportional to 1,308.55, 1,962.31 and 528.41

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Solution

The fourth proportional to 1,308.55, 1,962.31 and 528.41 is: 792.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308.55 : 1,962.31 = 528.41 : x
  2. Step 2: Convert to fraction form
    1,308.55/1,962.31 = 528.41/x
  3. Step 3: Cross multiply
    1,308.55x = 1,962.31 × 528.41
  4. Step 4: Simplify right side
    1,308.55x = 1,036,899.99
  5. Step 5: Solve for x
    x = 1,036,899.99/1,308.55
  6. Step 6: Final answer
    x = 792.40

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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.