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Finding the Fourth Proportional to 741.80, 1,112.33 and 433.73

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Solution

The fourth proportional to 741.80, 1,112.33 and 433.73 is: 650.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.80 : 1,112.33 = 433.73 : x
  2. Step 2: Convert to fraction form
    741.80/1,112.33 = 433.73/x
  3. Step 3: Cross multiply
    741.80x = 1,112.33 × 433.73
  4. Step 4: Simplify right side
    741.80x = 482,450.89
  5. Step 5: Solve for x
    x = 482,450.89/741.80
  6. Step 6: Final answer
    x = 650.38

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1.5x scale

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.