Home / 1,021.03-1,531.33-327.76

Finding the Fourth Proportional to 1,021.03, 1,531.33 and 327.76

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Solution

The fourth proportional to 1,021.03, 1,531.33 and 327.76 is: 491.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.03 : 1,531.33 = 327.76 : x
  2. Step 2: Convert to fraction form
    1,021.03/1,531.33 = 327.76/x
  3. Step 3: Cross multiply
    1,021.03x = 1,531.33 × 327.76
  4. Step 4: Simplify right side
    1,021.03x = 501,904.07
  5. Step 5: Solve for x
    x = 501,904.07/1,021.03
  6. Step 6: Final answer
    x = 491.57

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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.