Home / 1,020.84-1,531.08-327.68

Finding the Fourth Proportional to 1,020.84, 1,531.08 and 327.68

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Solution

The fourth proportional to 1,020.84, 1,531.08 and 327.68 is: 491.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,020.84 : 1,531.08 = 327.68 : x
  2. Step 2: Convert to fraction form
    1,020.84/1,531.08 = 327.68/x
  3. Step 3: Cross multiply
    1,020.84x = 1,531.08 × 327.68
  4. Step 4: Simplify right side
    1,020.84x = 501,704.29
  5. Step 5: Solve for x
    x = 501,704.29/1,020.84
  6. Step 6: Final answer
    x = 491.46

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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.