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Finding the Fourth Proportional to 527.22, 791.55 and 519.30

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Solution

The fourth proportional to 527.22, 791.55 and 519.30 is: 779.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.22 : 791.55 = 519.30 : x
  2. Step 2: Convert to fraction form
    527.22/791.55 = 519.30/x
  3. Step 3: Cross multiply
    527.22x = 791.55 × 519.30
  4. Step 4: Simplify right side
    527.22x = 411,051.92
  5. Step 5: Solve for x
    x = 411,051.92/527.22
  6. Step 6: Final answer
    x = 779.66

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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.