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Finding the Fourth Proportional to 262.55, 391.98 and 236.63

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Solution

The fourth proportional to 262.55, 391.98 and 236.63 is: 353.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.55 : 391.98 = 236.63 : x
  2. Step 2: Convert to fraction form
    262.55/391.98 = 236.63/x
  3. Step 3: Cross multiply
    262.55x = 391.98 × 236.63
  4. Step 4: Simplify right side
    262.55x = 92,752.27
  5. Step 5: Solve for x
    x = 92,752.27/262.55
  6. Step 6: Final answer
    x = 353.28

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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.