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Finding the Fourth Proportional to 527.36, 789.78 and 267.03

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Solution

The fourth proportional to 527.36, 789.78 and 267.03 is: 399.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.36 : 789.78 = 267.03 : x
  2. Step 2: Convert to fraction form
    527.36/789.78 = 267.03/x
  3. Step 3: Cross multiply
    527.36x = 789.78 × 267.03
  4. Step 4: Simplify right side
    527.36x = 210,894.95
  5. Step 5: Solve for x
    x = 210,894.95/527.36
  6. Step 6: Final answer
    x = 399.91

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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.