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Finding the Fourth Proportional to 525.92, 787.86 and 331.11

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Solution

The fourth proportional to 525.92, 787.86 and 331.11 is: 496.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.92 : 787.86 = 331.11 : x
  2. Step 2: Convert to fraction form
    525.92/787.86 = 331.11/x
  3. Step 3: Cross multiply
    525.92x = 787.86 × 331.11
  4. Step 4: Simplify right side
    525.92x = 260,868.32
  5. Step 5: Solve for x
    x = 260,868.32/525.92
  6. Step 6: Final answer
    x = 496.03

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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.