Home / 1,375.20-2,062.56-401.08

Finding the Fourth Proportional to 1,375.20, 2,062.56 and 401.08

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Solution

The fourth proportional to 1,375.20, 2,062.56 and 401.08 is: 601.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,375.20 : 2,062.56 = 401.08 : x
  2. Step 2: Convert to fraction form
    1,375.20/2,062.56 = 401.08/x
  3. Step 3: Cross multiply
    1,375.20x = 2,062.56 × 401.08
  4. Step 4: Simplify right side
    1,375.20x = 827,251.56
  5. Step 5: Solve for x
    x = 827,251.56/1,375.20
  6. Step 6: Final answer
    x = 601.55

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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.