Home / 1,256.18-1,884.38-331.72

Finding the Fourth Proportional to 1,256.18, 1,884.38 and 331.72

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Solution

The fourth proportional to 1,256.18, 1,884.38 and 331.72 is: 497.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.18 : 1,884.38 = 331.72 : x
  2. Step 2: Convert to fraction form
    1,256.18/1,884.38 = 331.72/x
  3. Step 3: Cross multiply
    1,256.18x = 1,884.38 × 331.72
  4. Step 4: Simplify right side
    1,256.18x = 625,086.53
  5. Step 5: Solve for x
    x = 625,086.53/1,256.18
  6. Step 6: Final answer
    x = 497.61

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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.