Home / 1,086.37-1,629.79-356.02

Finding the Fourth Proportional to 1,086.37, 1,629.79 and 356.02

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Solution

The fourth proportional to 1,086.37, 1,629.79 and 356.02 is: 534.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086.37 : 1,629.79 = 356.02 : x
  2. Step 2: Convert to fraction form
    1,086.37/1,629.79 = 356.02/x
  3. Step 3: Cross multiply
    1,086.37x = 1,629.79 × 356.02
  4. Step 4: Simplify right side
    1,086.37x = 580,232.87
  5. Step 5: Solve for x
    x = 580,232.87/1,086.37
  6. Step 6: Final answer
    x = 534.10

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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.