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Finding the Fourth Proportional to 793.02, 1,188.83 and 330.51

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Solution

The fourth proportional to 793.02, 1,188.83 and 330.51 is: 495.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.02 : 1,188.83 = 330.51 : x
  2. Step 2: Convert to fraction form
    793.02/1,188.83 = 330.51/x
  3. Step 3: Cross multiply
    793.02x = 1,188.83 × 330.51
  4. Step 4: Simplify right side
    793.02x = 392,920.20
  5. Step 5: Solve for x
    x = 392,920.20/793.02
  6. Step 6: Final answer
    x = 495.47

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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.