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Finding the Fourth Proportional to 1,151.76, 1,727.91 and 330.03

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Solution

The fourth proportional to 1,151.76, 1,727.91 and 330.03 is: 495.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,151.76 : 1,727.91 = 330.03 : x
  2. Step 2: Convert to fraction form
    1,151.76/1,727.91 = 330.03/x
  3. Step 3: Cross multiply
    1,151.76x = 1,727.91 × 330.03
  4. Step 4: Simplify right side
    1,151.76x = 570,262.14
  5. Step 5: Solve for x
    x = 570,262.14/1,151.76
  6. Step 6: Final answer
    x = 495.12

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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.