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Finding the Fourth Proportional to 416.22, 624.44 and 242.85

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Solution

The fourth proportional to 416.22, 624.44 and 242.85 is: 364.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.22 : 624.44 = 242.85 : x
  2. Step 2: Convert to fraction form
    416.22/624.44 = 242.85/x
  3. Step 3: Cross multiply
    416.22x = 624.44 × 242.85
  4. Step 4: Simplify right side
    416.22x = 151,645.25
  5. Step 5: Solve for x
    x = 151,645.25/416.22
  6. Step 6: Final answer
    x = 364.34

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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.