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Finding the Fourth Proportional to 262.66, 392.80 and 200.98

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Solution

The fourth proportional to 262.66, 392.80 and 200.98 is: 300.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.66 : 392.80 = 200.98 : x
  2. Step 2: Convert to fraction form
    262.66/392.80 = 200.98/x
  3. Step 3: Cross multiply
    262.66x = 392.80 × 200.98
  4. Step 4: Simplify right side
    262.66x = 78,944.94
  5. Step 5: Solve for x
    x = 78,944.94/262.66
  6. Step 6: Final answer
    x = 300.56

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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.