Home / 1,112.76-1,669.05-343.26

Finding the Fourth Proportional to 1,112.76, 1,669.05 and 343.26

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Solution

The fourth proportional to 1,112.76, 1,669.05 and 343.26 is: 514.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.76 : 1,669.05 = 343.26 : x
  2. Step 2: Convert to fraction form
    1,112.76/1,669.05 = 343.26/x
  3. Step 3: Cross multiply
    1,112.76x = 1,669.05 × 343.26
  4. Step 4: Simplify right side
    1,112.76x = 572,918.10
  5. Step 5: Solve for x
    x = 572,918.10/1,112.76
  6. Step 6: Final answer
    x = 514.86

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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.