Home / 1,076.26-1,485.27-634.12

Finding the Fourth Proportional to 1,076.26, 1,485.27 and 634.12

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Solution

The fourth proportional to 1,076.26, 1,485.27 and 634.12 is: 875.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,076.26 : 1,485.27 = 634.12 : x
  2. Step 2: Convert to fraction form
    1,076.26/1,485.27 = 634.12/x
  3. Step 3: Cross multiply
    1,076.26x = 1,485.27 × 634.12
  4. Step 4: Simplify right side
    1,076.26x = 941,839.41
  5. Step 5: Solve for x
    x = 941,839.41/1,076.26
  6. Step 6: Final answer
    x = 875.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.