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Finding the Fourth Proportional to 526.52, 789.94 and 270.20

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Solution

The fourth proportional to 526.52, 789.94 and 270.20 is: 405.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    526.52 : 789.94 = 270.20 : x
  2. Step 2: Convert to fraction form
    526.52/789.94 = 270.20/x
  3. Step 3: Cross multiply
    526.52x = 789.94 × 270.20
  4. Step 4: Simplify right side
    526.52x = 213,441.79
  5. Step 5: Solve for x
    x = 213,441.79/526.52
  6. Step 6: Final answer
    x = 405.38

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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.