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Finding the Fourth Proportional to 1,379.21, 2,067.65 and 598.62

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Solution

The fourth proportional to 1,379.21, 2,067.65 and 598.62 is: 897.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379.21 : 2,067.65 = 598.62 : x
  2. Step 2: Convert to fraction form
    1,379.21/2,067.65 = 598.62/x
  3. Step 3: Cross multiply
    1,379.21x = 2,067.65 × 598.62
  4. Step 4: Simplify right side
    1,379.21x = 1,237,733.24
  5. Step 5: Solve for x
    x = 1,237,733.24/1,379.21
  6. Step 6: Final answer
    x = 897.42

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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.