Home / 1,489.14-2,233.53-393.59

Finding the Fourth Proportional to 1,489.14, 2,233.53 and 393.59

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Solution

The fourth proportional to 1,489.14, 2,233.53 and 393.59 is: 590.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,489.14 : 2,233.53 = 393.59 : x
  2. Step 2: Convert to fraction form
    1,489.14/2,233.53 = 393.59/x
  3. Step 3: Cross multiply
    1,489.14x = 2,233.53 × 393.59
  4. Step 4: Simplify right side
    1,489.14x = 879,088.83
  5. Step 5: Solve for x
    x = 879,088.83/1,489.14
  6. Step 6: Final answer
    x = 590.33

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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.