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Finding the Fourth Proportional to 525.95, 789.17 and 330.90

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Solution

The fourth proportional to 525.95, 789.17 and 330.90 is: 496.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    525.95 : 789.17 = 330.90 : x
  2. Step 2: Convert to fraction form
    525.95/789.17 = 330.90/x
  3. Step 3: Cross multiply
    525.95x = 789.17 × 330.90
  4. Step 4: Simplify right side
    525.95x = 261,134.70
  5. Step 5: Solve for x
    x = 261,134.70/525.95
  6. Step 6: Final answer
    x = 496.51

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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.