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Finding the Fourth Proportional to 433.68, 650.56 and 145.05

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Solution

The fourth proportional to 433.68, 650.56 and 145.05 is: 217.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.68 : 650.56 = 145.05 : x
  2. Step 2: Convert to fraction form
    433.68/650.56 = 145.05/x
  3. Step 3: Cross multiply
    433.68x = 650.56 × 145.05
  4. Step 4: Simplify right side
    433.68x = 94,363.73
  5. Step 5: Solve for x
    x = 94,363.73/433.68
  6. Step 6: Final answer
    x = 217.59

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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.