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Finding the Fourth Proportional to 563.84, 778.03 and 327.72

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Solution

The fourth proportional to 563.84, 778.03 and 327.72 is: 452.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    563.84 : 778.03 = 327.72 : x
  2. Step 2: Convert to fraction form
    563.84/778.03 = 327.72/x
  3. Step 3: Cross multiply
    563.84x = 778.03 × 327.72
  4. Step 4: Simplify right side
    563.84x = 254,975.99
  5. Step 5: Solve for x
    x = 254,975.99/563.84
  6. Step 6: Final answer
    x = 452.21

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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.