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Finding the Fourth Proportional to 741.80, 1,023.80 and 447.27

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Solution

The fourth proportional to 741.80, 1,023.80 and 447.27 is: 617.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.80 : 1,023.80 = 447.27 : x
  2. Step 2: Convert to fraction form
    741.80/1,023.80 = 447.27/x
  3. Step 3: Cross multiply
    741.80x = 1,023.80 × 447.27
  4. Step 4: Simplify right side
    741.80x = 457,907.67
  5. Step 5: Solve for x
    x = 457,907.67/741.80
  6. Step 6: Final answer
    x = 617.29

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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.