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Finding the Fourth Proportional to 1,150.26, 1,725.38 and 328.53

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Solution

The fourth proportional to 1,150.26, 1,725.38 and 328.53 is: 492.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.26 : 1,725.38 = 328.53 : x
  2. Step 2: Convert to fraction form
    1,150.26/1,725.38 = 328.53/x
  3. Step 3: Cross multiply
    1,150.26x = 1,725.38 × 328.53
  4. Step 4: Simplify right side
    1,150.26x = 566,837.45
  5. Step 5: Solve for x
    x = 566,837.45/1,150.26
  6. Step 6: Final answer
    x = 492.79

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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.