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Finding the Fourth Proportional to 1,149.58, 1,724.40 and 327.94

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Solution

The fourth proportional to 1,149.58, 1,724.40 and 327.94 is: 491.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,149.58 : 1,724.40 = 327.94 : x
  2. Step 2: Convert to fraction form
    1,149.58/1,724.40 = 327.94/x
  3. Step 3: Cross multiply
    1,149.58x = 1,724.40 × 327.94
  4. Step 4: Simplify right side
    1,149.58x = 565,499.74
  5. Step 5: Solve for x
    x = 565,499.74/1,149.58
  6. Step 6: Final answer
    x = 491.92

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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.