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Finding the Fourth Proportional to 527.96, 791.93 and 143.21

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Solution

The fourth proportional to 527.96, 791.93 and 143.21 is: 214.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.96 : 791.93 = 143.21 : x
  2. Step 2: Convert to fraction form
    527.96/791.93 = 143.21/x
  3. Step 3: Cross multiply
    527.96x = 791.93 × 143.21
  4. Step 4: Simplify right side
    527.96x = 113,408.16
  5. Step 5: Solve for x
    x = 113,408.16/527.96
  6. Step 6: Final answer
    x = 214.81

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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.