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Finding the Fourth Proportional to 433.88, 650.67 and 145.25

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Solution

The fourth proportional to 433.88, 650.67 and 145.25 is: 217.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.88 : 650.67 = 145.25 : x
  2. Step 2: Convert to fraction form
    433.88/650.67 = 145.25/x
  3. Step 3: Cross multiply
    433.88x = 650.67 × 145.25
  4. Step 4: Simplify right side
    433.88x = 94,509.82
  5. Step 5: Solve for x
    x = 94,509.82/433.88
  6. Step 6: Final answer
    x = 217.82

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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.