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Finding the Fourth Proportional to 262.38, 391.52 and 235.05

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Solution

The fourth proportional to 262.38, 391.52 and 235.05 is: 350.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.38 : 391.52 = 235.05 : x
  2. Step 2: Convert to fraction form
    262.38/391.52 = 235.05/x
  3. Step 3: Cross multiply
    262.38x = 391.52 × 235.05
  4. Step 4: Simplify right side
    262.38x = 92,026.78
  5. Step 5: Solve for x
    x = 92,026.78/262.38
  6. Step 6: Final answer
    x = 350.74

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.