Home / 1,245.90-1,867.99-552.19

Finding the Fourth Proportional to 1,245.90, 1,867.99 and 552.19

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Solution

The fourth proportional to 1,245.90, 1,867.99 and 552.19 is: 827.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.90 : 1,867.99 = 552.19 : x
  2. Step 2: Convert to fraction form
    1,245.90/1,867.99 = 552.19/x
  3. Step 3: Cross multiply
    1,245.90x = 1,867.99 × 552.19
  4. Step 4: Simplify right side
    1,245.90x = 1,031,485.40
  5. Step 5: Solve for x
    x = 1,031,485.40/1,245.90
  6. Step 6: Final answer
    x = 827.90

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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.