Home / 1,355.09-2,032.64-329.09

Finding the Fourth Proportional to 1,355.09, 2,032.64 and 329.09

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Solution

The fourth proportional to 1,355.09, 2,032.64 and 329.09 is: 493.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,355.09 : 2,032.64 = 329.09 : x
  2. Step 2: Convert to fraction form
    1,355.09/2,032.64 = 329.09/x
  3. Step 3: Cross multiply
    1,355.09x = 2,032.64 × 329.09
  4. Step 4: Simplify right side
    1,355.09x = 668,921.50
  5. Step 5: Solve for x
    x = 668,921.50/1,355.09
  6. Step 6: Final answer
    x = 493.64

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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.