Home / 1,200.30-1,799.82-378.36

Finding the Fourth Proportional to 1,200.30, 1,799.82 and 378.36

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Solution

The fourth proportional to 1,200.30, 1,799.82 and 378.36 is: 567.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200.30 : 1,799.82 = 378.36 : x
  2. Step 2: Convert to fraction form
    1,200.30/1,799.82 = 378.36/x
  3. Step 3: Cross multiply
    1,200.30x = 1,799.82 × 378.36
  4. Step 4: Simplify right side
    1,200.30x = 680,979.90
  5. Step 5: Solve for x
    x = 680,979.90/1,200.30
  6. Step 6: Final answer
    x = 567.34

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1.5x scale

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.