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Finding the Fourth Proportional to 441.11, 661.57 and 148.58

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Solution

The fourth proportional to 441.11, 661.57 and 148.58 is: 222.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    441.11 : 661.57 = 148.58 : x
  2. Step 2: Convert to fraction form
    441.11/661.57 = 148.58/x
  3. Step 3: Cross multiply
    441.11x = 661.57 × 148.58
  4. Step 4: Simplify right side
    441.11x = 98,292.02
  5. Step 5: Solve for x
    x = 98,292.02/441.11
  6. Step 6: Final answer
    x = 222.83

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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.