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Finding the Fourth Proportional to 433.86, 650.25 and 289.14

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Solution

The fourth proportional to 433.86, 650.25 and 289.14 is: 433.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.86 : 650.25 = 289.14 : x
  2. Step 2: Convert to fraction form
    433.86/650.25 = 289.14/x
  3. Step 3: Cross multiply
    433.86x = 650.25 × 289.14
  4. Step 4: Simplify right side
    433.86x = 188,013.29
  5. Step 5: Solve for x
    x = 188,013.29/433.86
  6. Step 6: Final answer
    x = 433.35

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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.