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Finding the Fourth Proportional to 447.22, 670.53 and 154.64

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Solution

The fourth proportional to 447.22, 670.53 and 154.64 is: 231.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.22 : 670.53 = 154.64 : x
  2. Step 2: Convert to fraction form
    447.22/670.53 = 154.64/x
  3. Step 3: Cross multiply
    447.22x = 670.53 × 154.64
  4. Step 4: Simplify right side
    447.22x = 103,690.76
  5. Step 5: Solve for x
    x = 103,690.76/447.22
  6. Step 6: Final answer
    x = 231.86

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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.