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Finding the Fourth Proportional to 288.22, 432.09 and 134.07

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Solution

The fourth proportional to 288.22, 432.09 and 134.07 is: 200.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.22 : 432.09 = 134.07 : x
  2. Step 2: Convert to fraction form
    288.22/432.09 = 134.07/x
  3. Step 3: Cross multiply
    288.22x = 432.09 × 134.07
  4. Step 4: Simplify right side
    288.22x = 57,930.31
  5. Step 5: Solve for x
    x = 57,930.31/288.22
  6. Step 6: Final answer
    x = 200.99

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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.