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Finding the Fourth Proportional to 433.73, 650.78 and 260.75

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Solution

The fourth proportional to 433.73, 650.78 and 260.75 is: 391.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.73 : 650.78 = 260.75 : x
  2. Step 2: Convert to fraction form
    433.73/650.78 = 260.75/x
  3. Step 3: Cross multiply
    433.73x = 650.78 × 260.75
  4. Step 4: Simplify right side
    433.73x = 169,689.58
  5. Step 5: Solve for x
    x = 169,689.58/433.73
  6. Step 6: Final answer
    x = 391.23

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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.