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Finding the Fourth Proportional to 288.46, 396.99 and 262.30

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Solution

The fourth proportional to 288.46, 396.99 and 262.30 is: 360.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.46 : 396.99 = 262.30 : x
  2. Step 2: Convert to fraction form
    288.46/396.99 = 262.30/x
  3. Step 3: Cross multiply
    288.46x = 396.99 × 262.30
  4. Step 4: Simplify right side
    288.46x = 104,128.49
  5. Step 5: Solve for x
    x = 104,128.49/288.46
  6. Step 6: Final answer
    x = 360.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.