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Finding the Fourth Proportional to 524.80, 787.22 and 200.20

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Solution

The fourth proportional to 524.80, 787.22 and 200.20 is: 300.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    524.80 : 787.22 = 200.20 : x
  2. Step 2: Convert to fraction form
    524.80/787.22 = 200.20/x
  3. Step 3: Cross multiply
    524.80x = 787.22 × 200.20
  4. Step 4: Simplify right side
    524.80x = 157,601.44
  5. Step 5: Solve for x
    x = 157,601.44/524.80
  6. Step 6: Final answer
    x = 300.31

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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.