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Finding the Fourth Proportional to 416.97, 625.50 and 243.90

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Solution

The fourth proportional to 416.97, 625.50 and 243.90 is: 365.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    416.97 : 625.50 = 243.90 : x
  2. Step 2: Convert to fraction form
    416.97/625.50 = 243.90/x
  3. Step 3: Cross multiply
    416.97x = 625.50 × 243.90
  4. Step 4: Simplify right side
    416.97x = 152,559.45
  5. Step 5: Solve for x
    x = 152,559.45/416.97
  6. Step 6: Final answer
    x = 365.88

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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.