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Finding the Fourth Proportional to 789.33, 1,089.54 and 541.47

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Solution

The fourth proportional to 789.33, 1,089.54 and 541.47 is: 747.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.33 : 1,089.54 = 541.47 : x
  2. Step 2: Convert to fraction form
    789.33/1,089.54 = 541.47/x
  3. Step 3: Cross multiply
    789.33x = 1,089.54 × 541.47
  4. Step 4: Simplify right side
    789.33x = 589,949.13
  5. Step 5: Solve for x
    x = 589,949.13/789.33
  6. Step 6: Final answer
    x = 747.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.