Home / 1,076.30-1,615.23-491.96

Finding the Fourth Proportional to 1,076.30, 1,615.23 and 491.96

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Solution

The fourth proportional to 1,076.30, 1,615.23 and 491.96 is: 738.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.30 : 1,615.23 = 491.96 : x
  2. Step 2: Convert to fraction form
    1,076.30/1,615.23 = 491.96/x
  3. Step 3: Cross multiply
    1,076.30x = 1,615.23 × 491.96
  4. Step 4: Simplify right side
    1,076.30x = 794,620.47
  5. Step 5: Solve for x
    x = 794,620.47/1,076.30
  6. Step 6: Final answer
    x = 738.29

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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.