Home / 1,177.78-1,766.48-447.18

Finding the Fourth Proportional to 1,177.78, 1,766.48 and 447.18

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Solution

The fourth proportional to 1,177.78, 1,766.48 and 447.18 is: 670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.78 : 1,766.48 = 447.18 : x
  2. Step 2: Convert to fraction form
    1,177.78/1,766.48 = 447.18/x
  3. Step 3: Cross multiply
    1,177.78x = 1,766.48 × 447.18
  4. Step 4: Simplify right side
    1,177.78x = 789,934.53
  5. Step 5: Solve for x
    x = 789,934.53/1,177.78
  6. Step 6: Final answer
    x = 670.70

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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.