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Finding the Fourth Proportional to 288.64, 433.26 and 236.67

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Solution

The fourth proportional to 288.64, 433.26 and 236.67 is: 355.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    288.64 : 433.26 = 236.67 : x
  2. Step 2: Convert to fraction form
    288.64/433.26 = 236.67/x
  3. Step 3: Cross multiply
    288.64x = 433.26 × 236.67
  4. Step 4: Simplify right side
    288.64x = 102,539.64
  5. Step 5: Solve for x
    x = 102,539.64/288.64
  6. Step 6: Final answer
    x = 355.25

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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.