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Finding the Fourth Proportional to 433.05, 650.16 and 425.76

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Solution

The fourth proportional to 433.05, 650.16 and 425.76 is: 639.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.05 : 650.16 = 425.76 : x
  2. Step 2: Convert to fraction form
    433.05/650.16 = 425.76/x
  3. Step 3: Cross multiply
    433.05x = 650.16 × 425.76
  4. Step 4: Simplify right side
    433.05x = 276,812.12
  5. Step 5: Solve for x
    x = 276,812.12/433.05
  6. Step 6: Final answer
    x = 639.22

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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.