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Finding the Fourth Proportional to 527.74, 791.07 and 253.42

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Solution

The fourth proportional to 527.74, 791.07 and 253.42 is: 379.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.74 : 791.07 = 253.42 : x
  2. Step 2: Convert to fraction form
    527.74/791.07 = 253.42/x
  3. Step 3: Cross multiply
    527.74x = 791.07 × 253.42
  4. Step 4: Simplify right side
    527.74x = 200,472.96
  5. Step 5: Solve for x
    x = 200,472.96/527.74
  6. Step 6: Final answer
    x = 379.87

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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.