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Finding the Fourth Proportional to 288.72, 433.04 and 134.68

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Solution

The fourth proportional to 288.72, 433.04 and 134.68 is: 202.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.72 : 433.04 = 134.68 : x
  2. Step 2: Convert to fraction form
    288.72/433.04 = 134.68/x
  3. Step 3: Cross multiply
    288.72x = 433.04 × 134.68
  4. Step 4: Simplify right side
    288.72x = 58,321.83
  5. Step 5: Solve for x
    x = 58,321.83/288.72
  6. Step 6: Final answer
    x = 202.00

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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.