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Finding the Fourth Proportional to 447.84, 617.70 and 273

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Solution

The fourth proportional to 447.84, 617.70 and 273 is: 376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.84 : 617.70 = 273 : x
  2. Step 2: Convert to fraction form
    447.84/617.70 = 273/x
  3. Step 3: Cross multiply
    447.84x = 617.70 × 273
  4. Step 4: Simplify right side
    447.84x = 168,632.10
  5. Step 5: Solve for x
    x = 168,632.10/447.84
  6. Step 6: Final answer
    x = 376.55

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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.