Home / 1,329.18-1,993.55-355.38

Finding the Fourth Proportional to 1,329.18, 1,993.55 and 355.38

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Solution

The fourth proportional to 1,329.18, 1,993.55 and 355.38 is: 533.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,329.18 : 1,993.55 = 355.38 : x
  2. Step 2: Convert to fraction form
    1,329.18/1,993.55 = 355.38/x
  3. Step 3: Cross multiply
    1,329.18x = 1,993.55 × 355.38
  4. Step 4: Simplify right side
    1,329.18x = 708,466.02
  5. Step 5: Solve for x
    x = 708,466.02/1,329.18
  6. Step 6: Final answer
    x = 533.01

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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.