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Finding the Fourth Proportional to 289.51, 433.64 and 234.43

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Solution

The fourth proportional to 289.51, 433.64 and 234.43 is: 351.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    289.51 : 433.64 = 234.43 : x
  2. Step 2: Convert to fraction form
    289.51/433.64 = 234.43/x
  3. Step 3: Cross multiply
    289.51x = 433.64 × 234.43
  4. Step 4: Simplify right side
    289.51x = 101,658.23
  5. Step 5: Solve for x
    x = 101,658.23/289.51
  6. Step 6: Final answer
    x = 351.14

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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.