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Finding the Fourth Proportional to 441.67, 662.50 and 260.22

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Solution

The fourth proportional to 441.67, 662.50 and 260.22 is: 390.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.67 : 662.50 = 260.22 : x
  2. Step 2: Convert to fraction form
    441.67/662.50 = 260.22/x
  3. Step 3: Cross multiply
    441.67x = 662.50 × 260.22
  4. Step 4: Simplify right side
    441.67x = 172,395.75
  5. Step 5: Solve for x
    x = 172,395.75/441.67
  6. Step 6: Final answer
    x = 390.33

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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.