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Finding the Fourth Proportional to 447.50, 617.45 and 251.00

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Solution

The fourth proportional to 447.50, 617.45 and 251.00 is: 346.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.50 : 617.45 = 251.00 : x
  2. Step 2: Convert to fraction form
    447.50/617.45 = 251.00/x
  3. Step 3: Cross multiply
    447.50x = 617.45 × 251.00
  4. Step 4: Simplify right side
    447.50x = 154,975.61
  5. Step 5: Solve for x
    x = 154,975.61/447.50
  6. Step 6: Final answer
    x = 346.32

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.