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Finding the Fourth Proportional to 444.45, 665.82 and 238.75

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Solution

The fourth proportional to 444.45, 665.82 and 238.75 is: 357.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    444.45 : 665.82 = 238.75 : x
  2. Step 2: Convert to fraction form
    444.45/665.82 = 238.75/x
  3. Step 3: Cross multiply
    444.45x = 665.82 × 238.75
  4. Step 4: Simplify right side
    444.45x = 158,962.86
  5. Step 5: Solve for x
    x = 158,962.86/444.45
  6. Step 6: Final answer
    x = 357.66

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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.