Home / 1,474.59-2,211.86-378.94

Finding the Fourth Proportional to 1,474.59, 2,211.86 and 378.94

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Solution

The fourth proportional to 1,474.59, 2,211.86 and 378.94 is: 568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,474.59 : 2,211.86 = 378.94 : x
  2. Step 2: Convert to fraction form
    1,474.59/2,211.86 = 378.94/x
  3. Step 3: Cross multiply
    1,474.59x = 2,211.86 × 378.94
  4. Step 4: Simplify right side
    1,474.59x = 838,160.33
  5. Step 5: Solve for x
    x = 838,160.33/1,474.59
  6. Step 6: Final answer
    x = 568.40

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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.