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Finding the Fourth Proportional to 525.09, 787.87 and 200.69

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Solution

The fourth proportional to 525.09, 787.87 and 200.69 is: 301.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.09 : 787.87 = 200.69 : x
  2. Step 2: Convert to fraction form
    525.09/787.87 = 200.69/x
  3. Step 3: Cross multiply
    525.09x = 787.87 × 200.69
  4. Step 4: Simplify right side
    525.09x = 158,116.90
  5. Step 5: Solve for x
    x = 158,116.90/525.09
  6. Step 6: Final answer
    x = 301.12

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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.