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Finding the Fourth Proportional to 525.45, 787.41 and 200.45

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Solution

The fourth proportional to 525.45, 787.41 and 200.45 is: 300.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.45 : 787.41 = 200.45 : x
  2. Step 2: Convert to fraction form
    525.45/787.41 = 200.45/x
  3. Step 3: Cross multiply
    525.45x = 787.41 × 200.45
  4. Step 4: Simplify right side
    525.45x = 157,832.40
  5. Step 5: Solve for x
    x = 157,832.40/525.45
  6. Step 6: Final answer
    x = 300.38

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1.5x scale

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.