Home / 1,331.13-1,996.56-551.25

Finding the Fourth Proportional to 1,331.13, 1,996.56 and 551.25

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Solution

The fourth proportional to 1,331.13, 1,996.56 and 551.25 is: 826.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.13 : 1,996.56 = 551.25 : x
  2. Step 2: Convert to fraction form
    1,331.13/1,996.56 = 551.25/x
  3. Step 3: Cross multiply
    1,331.13x = 1,996.56 × 551.25
  4. Step 4: Simplify right side
    1,331.13x = 1,100,603.70
  5. Step 5: Solve for x
    x = 1,100,603.70/1,331.13
  6. Step 6: Final answer
    x = 826.82

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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.