Home / 1,324.05-1,985.66-399.33

Finding the Fourth Proportional to 1,324.05, 1,985.66 and 399.33

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Solution

The fourth proportional to 1,324.05, 1,985.66 and 399.33 is: 598.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,324.05 : 1,985.66 = 399.33 : x
  2. Step 2: Convert to fraction form
    1,324.05/1,985.66 = 399.33/x
  3. Step 3: Cross multiply
    1,324.05x = 1,985.66 × 399.33
  4. Step 4: Simplify right side
    1,324.05x = 792,935.35
  5. Step 5: Solve for x
    x = 792,935.35/1,324.05
  6. Step 6: Final answer
    x = 598.87

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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.