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Finding the Fourth Proportional to 262.28, 392.88 and 259.04

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Solution

The fourth proportional to 262.28, 392.88 and 259.04 is: 388.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    262.28 : 392.88 = 259.04 : x
  2. Step 2: Convert to fraction form
    262.28/392.88 = 259.04/x
  3. Step 3: Cross multiply
    262.28x = 392.88 × 259.04
  4. Step 4: Simplify right side
    262.28x = 101,773.59
  5. Step 5: Solve for x
    x = 101,773.59/262.28
  6. Step 6: Final answer
    x = 388.03

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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.