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Finding the Fourth Proportional to 527.49, 791.31 and 162.31

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Solution

The fourth proportional to 527.49, 791.31 and 162.31 is: 243.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.49 : 791.31 = 162.31 : x
  2. Step 2: Convert to fraction form
    527.49/791.31 = 162.31/x
  3. Step 3: Cross multiply
    527.49x = 791.31 × 162.31
  4. Step 4: Simplify right side
    527.49x = 128,435.55
  5. Step 5: Solve for x
    x = 128,435.55/527.49
  6. Step 6: Final answer
    x = 243.48

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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.