Home / 1,241.30-1,862.20-363.80

Finding the Fourth Proportional to 1,241.30, 1,862.20 and 363.80

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Solution

The fourth proportional to 1,241.30, 1,862.20 and 363.80 is: 545.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,241.30 : 1,862.20 = 363.80 : x
  2. Step 2: Convert to fraction form
    1,241.30/1,862.20 = 363.80/x
  3. Step 3: Cross multiply
    1,241.30x = 1,862.20 × 363.80
  4. Step 4: Simplify right side
    1,241.30x = 677,468.36
  5. Step 5: Solve for x
    x = 677,468.36/1,241.30
  6. Step 6: Final answer
    x = 545.77

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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.